The JÃ Âmon () were a prehistoric hunter-gatherer culture that inhabited the Japanese archipelago between approximately 14,000 BC and 300 BC, following which they were largely assimilated by migrants from mainland East Asia of the following Yayoi culture. The JÃ Âmon people lived as sedentary hunter-gatherers, practicing plant foraging, fishing and hunting and possibly limited farming, manufacturing stone tools and pottery, the distinctive markings on the latter giving the culture their name. JÃ Âmon ancestry forms a minor amount of the ancestry of the Yamato people (the dominant ethnic group in Japan), and a majority of the ancestry of the Ainu people of Hokkaido.
, sometimes written as Jomon ( , ), is a Japanese word directly translated as "cord-marked" or "cord pattern". The term was coined by American zoologist, archaeologist, and orientalist Edward S. Morse in his book Shell Mounds of Omori (1879), describing his excavation of the à Âmori Shell Mound near Tokyo and subsequent discovery of sherds of cord-marked pottery at the site in 1877. Morse translated "straw-rope pattern" from English to Japanese as Jà Âmon, which he would use to refer to the people living during this period of Japanese history. Other names for Jà Âmon pottery had been used in the first few decades after the discovery such as "Ainu school pottery" and "Shell mound pottery" before the term Jà Âmon became the standard term used by the archeological community. Indeed, it was not until 1937 that the Japanese historian Yamanouchi Sugao used the pottery-derived term to refer to the Paleolithic inhabitants of Japan.
JÃ Âmon is a compound word composed of two kanji: and , the pronunciation and semantic value each being derived from their respective Go-on reading.
The word can thus be used as a common noun meaning "cord pattern", or as a shorter proper noun referring specifically to the JÃ Âmon period. These kanji appear in various related terms, creating a lexical field centered around the JÃ Âmon culture, which includes:
The study of the JÃ Âmon people and their material culture has evolved significantly since the Edo period. One of the earliest recorded depictions of JÃ Âmon artifacts dates back to Edo-period antiquarians, who began to catalogue and produce sketches of unusual pottery fragments brought to them from shell middens. The eighteenth century traveler Sugae Masumi mentioned JÃ Âmon-era remains in his writings, including his book Sumika no Yama (), referencing the shell mounds and prehistoric pottery discovered throughout his travels. Early antiquarians often misidentified these remains as being relics of legendary figures or lost civilizations rather than pieces of indigenous Japanese prehistory.
During the early Meiji period (1868âÂÂ1912), the emergence of modern archaeology in Japan led to a more systematic study of prehistoric remains. The first significant scholarly recognition of Jà Âmon culture came in 1877, when Edward S. Morse, an American zoologist and orientalist, excavated the à Âmori Shell Mound near Tokyo. Morse coined the term Jà Âmon (ç¸ÂæÂÂ, "cord-marked") to describe the distinctive pottery he uncovered, characterized by impressions made using twisted cords. Morse's work marked the beginning of formal archaeological study of the Jà Âmon period.
By the early 20th century, Japanese archaeologists began conducting their own excavations, with the main force behind archaeology in Japan shifting from foreign-led expeditions to national research initiatives. Scholars such as Tsuboi Shà Âgorà  and Torii Ryà «zà  conducted further investigations of shell middens, burial sites, and Jà Âmon settlements. Nationalist Kokugaku ("National Learning") scholars sought to frame Jà Âmon culture within Japan's historical narrative, often contrasting it with the agriculturalists of the Yayoi period, whose lifestyle centered on rice cultivation was more clearly Sinitic in influence. During the 1920sâÂÂ30s, Kojima Gizaemon and Hamada Kà Âsaku led efforts to establish regional typologies of Jà Âmon pottery, classifying styles into chronological phases based on stratigraphy, the study of sediment layers and their effects on artifacts over time. Excavations at sites such as Kasori Shell Midden in Chiba have shed light on Jà Âmon long-term settlement and subsistence patterns.
Between the 1950s and 1970s, the need for archaeological work in Japan expanded rapidly due to post-war reconstruction projects and large-scale public works. The Cultural Properties Protection Law (1950) required archaeological investigations before construction, leading to the excavation of thousands of JÃ Âmon sites.
This resulted in newfound academic interest in the Jà Âmon. Researchers such as Serizawa Chà Âsuke and Yamanouchi Sugao played key roles in redefining Jà Âmon chronology, refining pottery typologies, and identifying major Jà Âmon sub-periods (Incipient, Initial, Early, Middle, Late, Final). The discovery of large settlements, such as Sannai Maruyama (Aomori) in the 1990s, revealed that Jà Âmon groups lived in permanent or semi-permanent villages, contradicting earlier assumptions that they were exclusively nomadic hunter-gatherers.
By the late 20th century, new perspectives emerged regarding JÃ Âmon social complexity. The "Complex hunter-gatherers" theory became widely accepted, recognizing JÃ Âmon societies as displaying features typically associated with neolithic, agricultural civilization such as long-term settlement patterns, the development social hierarchy, and the development of a division of labor/advanced craft specialization (e.g., lacquerware, jade ornaments, figurines) despite their hunter-gather lifestyle. By the new millennium, international collaboration also increased, with researchers drawing comparisons between the JÃ Âmon and other prehistoric cultures, such as those Paleo- and Mesolithic cultures found in the American Pacific Northwest and Europe.
The 21st century has seen major advancements in JÃ Âmon archaeology, driven by scientific dating techniques, DNA Analysis, and interdisciplinary studies.
Like many hunter-gatherer societies, the day to day life of the JÃ Âmon was largely centered around activities like hunting, fishing, foraging for tree nuts, and catching shellfish. However, it has also been suggested that the JÃ Âmon people practiced forms of early agriculture, such as the regular cultivation of adzuki beans and soybeans. The JÃ Âmon people also used pottery, and generally lived in semi-permanent pit dwellings, characteristics more typically associated with late mesolithic or early neolithic agriculturalists.
The modern JÃ Âmon chronology commonly accepted by scholars generally follows that first laid out by Serizawa in JÃ Âmon Pottery Classification and Chronology, published in 1956. Archaeological evidence suggests that settlements changed throughout the different phases of the JÃ Âmon Period.
The Korekawa site, in Hachinohe, Aomori Prefecture, is unique because it has three subsites, each from a different JÃ Âmon timeframe: (Early to Middle JÃ Âmon period), (Middle JÃ Âmon period), and (Final JÃ Âmon period). They are near each other on a terrace by the Niida River. Ichioji is the largest of the three subsites, while Nakai is the smallest but has yielded the most artifacts.
The excavation of Sannai Maruyama Site has revealed networks of what are believed to be unpaved, JÃ Âmon-era roadways. In addition to connecting the areas, buildings, and ritual spaces within the settlement itself, it theorized these paths may have also extended to other settlements. On both sides of the roads were aligned graves of various types and characteristics, including pit graves, tumuli, the graves of children, and stone circle graves. Further excavations along these long-forgotten pathways have also revealed both standard and large pit dwellings, dumping grounds, storage pits, unknown pillar-supported structures of various sizes, and a watering place used for soaking Japanese horse chestnuts.
As mentioned, JÃ Âmon people typically resided in pit dwellings, semi-subterranean buildings built by digging a shallow hole in the ground, constructing a roof extending upwards from each side, and placing a hearth in its center. As JÃ Âmon pit dwellings are relatively small compared to other prehistoric cultures, it is believed that each dwelling would have housed a family of four to six people for as long as two to three generations. The roofs enclosing these spaces were made of bark or thatch and may have been covered with soil to provide an extra layer of insulation. Altars may have also been installed in some of them. Pit dwellings longer than 10m are classified as large pit dwellings, which most likely functioned as communal spaces like meeting places, workshops, or shared winter residences comparable to contemporaneous Meso- and Neolithic structures found in Europe and the Americas.
Like other Paleolithic cultures, JÃ Âmon sites display widespread evidence of the use and production of stone tools. JÃ Âmon tools were most commonly fashioned from chipped stone, made of siliceous shale. However, tools made from other types of stone, wood, and rarer materials such as obsidian and jade have also been discovered in JÃ Âmon-period sites.
These types of tools included but were not limited to: knives, stone drills, spearheads, arrowheads, scrapers sometimes with barbs or stemmed, semi-circular flat chipped stone tools believed to have been used in the preparation of food. In the case of tools built from multiple parts such as spears or arrows, JÃ Âmon toolmakers used bitumen as an adhesive to bind the stone point with its wooden shaft.
However, some stone implements appear to have been made without the normal chipping process. This includes ground stone axes, made from granodiorite, greenstone, or blueschist, abrasion cutting stone tools, whetstones, grindstones with or without grooves, hammer stones, saddle querns, and stone weights.
Antlers and bones were also used for tools such as spatulas, fish hooks, harpoon heads, drills, and needles. Exclusive to antlers were hammers, where the base of the antler was used as the impact surface. Wood was used for making shafts of spears, arrows, harpoons, bows, and digging sticks while strips of bark were used to weave baskets.
The JÃ Âmon people were incredibly skilled, likely opportunistic hunters capable of tracking, catching, and killing a wide variety of both large and small game endemic to their environment. These included flying squirrels, hares, weasels, martens, foxes, squirrels, tanuki (raccoon dogs), wild boar, deer, bears, sea lions, badgers, apes, snow monkeys, otters, cormorants, albatrosses, pheasants, grebes, geese, and ducks. Hunting techniques included the use of projectile weapons like bows and spears, pitfall traps, and hunting dogs.
The percentage of prey hunted varies from site to site, but generally wild boars and deer were the staple of what was, in the case of the JÃ Âmon, a largely carnivorous diet. However, in the Sannai Maruyama site, flying squirrels and hares are the dominant sources of meat most likely as a result of environmental factors.
Archaeologists have uncovered the bones of many species of fish and other types of seafood in JÃ Âmon dumping grounds. Given the variety of the species consumed, some of which would have required considerable travel to catch, it has been postulated that the JÃ Âmon were adept fishermen and mariners. Some of the marine species found at JÃ Âmon sites include yellowtail amberjack, right-eyed flounder, various types of sharks, mackerel, herring, flounder, scorpion fishes, globefish, greenling, Pacific sea bream, and Pacific cod. The JÃ Âmon also gathered shellfish, including Japanese oysters, Ezo abalones, clams, crabs, octopuses, squid, mantis shrimp, and other types of crustaceans.
The JÃ Âmon fished using harpoons, spears, lines, and nets. JÃ Âmon harpoon heads were detachable and could be reeled in using ropes tied through their base. Harpoons and spears were used to catch larger prey, line fishing for smaller prey was done using fish hooks fashioned from antler or bone. JÃ Âmon fish hooks generally fall into two categories: single-ended hooks and coupled/combined hooks. The main difference between the two was that coupled fish hooks were barbed while single-ended hooks were not. However, both types had notches to tie the line. Stone weights were attached to nets to act as sinkers.
There is evidence that the JÃ Âmon people built ships out of large trees and used them for fishing and traveling. However, it is still debated whether JÃ Âmon watercraft used sails or paddles as their primary means of propulsion.
The JÃ Âmon grew trees close to their settlements and gathered edible wild plants. Chestnuts were an especially common part of JÃ Âmon diets, while trees themselves were frequently used as fuel and building material. Other types of flora regularly consumed by the JÃ Âmon include walnuts, Japanese horse chestnuts, adzuki beans, Udo, silver vines, elderberries, wild grapes, mulberries, raspberries, and yams. Roots, tubers such as yams, and other subterranean forage was dug up using digging sticks. However, plant genomics studies have indicated that the adzuki bean was domesticated in eastern Japan between 3,000 and 5,000 years ago, suggesting that, in addition to gathering and cultivating wild plant species, the JÃ Âmon were engaged in early plant domestication.
Nuts, walnuts, and chestnuts were collected during autumn and were kept in storage pits or indoor inside large earthenware pots. Before use, they were crushed with hammer stones or grinding stone on top of saddle querns. Japanese horse chestnut and other chestnuts with strong scents were soaked in water to mellow their taste. At the Sannai Maruyama Site, archaeologists discovered a reservoir, filled and emptied by a spring, that may have been used to process nuts through soaking. The JÃ Âmon might have also been able to distill alcohol using elderberries.
Cooking was done on the pit dwelling's central hearth using smaller, purpose-made earthenware pots distinct from the those used for storage. During the Middle JÃ Âmon period, earthenware was made in various shapes including pedestal dishes and bowls used to serve food. Round wooden containers are thought to have been held in one hand while pouring liquids, although the purpose of the custom remains a mystery.
The JÃ Âmon maintained extensive trade networks that extended several hundred kilometers across the Japanese archipelago. Key trade items included obsidian, gemstones such as jade, amber, asphalt, red pigments, and various types of stone materials used to produce polished stone axes including granodiorite, greenstone, and blueschist. For example, Moroiso-style pottery, which is just south of Tokyo, in the Kansai region, has been found as far south as the Satogi site in Okayama Prefecture and as far north as the Taigi and Tashirojima sites in Miyagi Prefecture, both about from Moroiso.
Some materials were transported in raw form, while others were traded as refined or finished goods. Certain JÃ Âmon sites appear to have specialized in the production of specific raw materials or crafted items. For example, the Sannai Maruyama site, a major trading hub, was particularly known for its jade artifacts. Its inhabitants also engaged in the exchange of finished obsidian tools raw obsidian sourced, in some cases, from as far away as Hokkaido and Nagano. These tools, made of high-quality obsidian, have been found over 700 kilometers from their origin points.
Evidence of trade between the JÃ Âmon of Hokkaido and Honshu, as well as between those living on the Kyushu and Ryukyu Islands, would further suggest that the JÃ Âmon were skilled navigators and seafarers capable of long-distance maritime travel. According to a 2006 study, it is also possible that the JÃ Âmon traded with southern Chinese and Southeast Asians via Fujian.
Elements of JÃ Âmon culture are believed to be preserved in various aspects of modern Japanese culture. These include early forms of spiritual beliefs that preceded Shinto, as well as marriage customs, architectural styles, festivals, and traditional crafts such as lacquerware and pottery. These cultural traits are considered integral to the development of Japanese cultural identity.
Other examples of Jà Âmon influence in present Japanese culture, especially in Kyà «shà «, include the worship of Ame-no-Uzume (ã¢ã¡ãÂÂã¦ãºã¡) in Miyazaki Prefecture, Ta no Kami-sa (ç°ã®ç¥ÂãÂÂãÂÂ) in the Aso region of Kumamoto Prefecture, and the Mishaguji (ãÂÂã·ã£ã°ã¸) belief system.
Jà Âmon pottery is identifiable by its distinctive cord-marked patterns, a style in which ropes were pressed into the surface of wet clay to create decorative designs. This technique, characteristic of the early Jà Âmon period, is widely regarded as one of the oldest forms of pottery in East Asia and the world. Among the most famous examples is the kaen-style pottery (ç«çÂÂÃ¥ÂÂÃ¥ÂÂå¨, kaen-gata doki) from the Middle Jà Âmon period, noted for its elaborate patterns and dynamic forms.
In addition to pottery and jars, the Jà Âmon people also produced a large number of highly stylized clay figurines (dogà «) and clay masks, reflecting a rich tradition of symbolic and ritualistic art.
Lacquerware included wooden bowls, dishes, and combs. It was mixed with red pigments to give it a red color. Lacquer tree sap was collected from cultivated and managed areas. The steps to make lacquerware were:
Red pigments were made from ferrous quartz, then ground into powder before mixing it with lacquer. Some pottery was directly painted with red pigments instead of lacquering it.
Fabric made with twisted warp called angin were found at Sannai Maruyama. It is believed that cloth and clothings were made of weaved twisted plant fiber such as hemp in this way.
The JÃ Âmon people also practiced sewing using needles of bone and antler.
A wide variety of materials were used in the creation of JÃ Âmon accessories, including clay, stone, bone, shells, and lacquered wood. These ornaments are believed to have been used not only for special occasions but also in everyday life.
Excavations have uncovered bone hairpins and lacquered wooden combs, which were likely used to fasten and decorate tied hair. Cylindrical or drum-shaped earrings made of clay were worn by inserting them into pierced earlobes, while slender stone earrings were also passed through ear holes.
Many of these ornament styles show notable similarities to accessories found in later periods of Japanese history, suggesting a lasting influence of JÃ Âmon aesthetics on subsequent Japanese decorative traditions.
Magatama are curved, comma-shaped beads with a distinctive C-shape and a hole at one end, typically used as ornaments or ceremonial objects. They are believed to have been invented by the JÃ Âmon people and have been excavated from archaeological sites throughout Japan.
Magatama continued to be widely used not only during the Jà Âmon period but also throughout the Yayoi and Kofun periods, remaining an important accessory in Japanese culture. Today, magatama are still revered as sacred objects in various Shinto shrines and also appear in Japanese mythology. One of the Imperial Regalia of Japan, the Yasakani no Magatama (å «å°ºçÂÂå¾çÂÂ), is considered a symbol of the Japanese monarchy.
These artifacts were most commonly made from jade (jadeite), but examples crafted from stone, clay, and boar tusks have also been discovered. The materials and production techniques varied by region and era, reflecting both local resources and cultural influences.
It is suggested that the religion of the Jà Âmon people was similar to early Shinto, specifically Ko-Shintà Â. It was largely based on animism, and possibly shamanism. Other similar religions are the Ryukyuan and Ainu religions. Certain strange stone implements in various shapes are thought to have been used as talisman.
Accessories and jewelry are thought to have been worn more during special occasions such as festivals, burials, and rituals than in everyday life.
Central ritual sites outside settlements and belonging to multiple villages have started to appear during the Late JÃ Âmon period but hub settlements also acting as central ritual hubs appeared during the Middle JÃ Âmon period.
Mounds were built using refuse from soil excavation and daily life activities, but were not merely dumping grounds; instead, they had special significance as places of rituals.
Stone and clay figurines are believed to have been used for festivals. Many represented women with breasts and parts or holes possibly representing genitalia. They are thought to have been a way of praying for fertility in festivals. Asphalt has been used on some of them to attempt to repair them.
Miniature pottery are earthenware in extremely small sized modelled after utilitarian-sized vessels such as deep bowls for cooking and storing and shallow bowls for serving food. They are thought to have been used in ceremonies rather than as toys due to their excavations in ceremonial mounds.
Other objects found in ceremonial mounds include triangular pottery (theorized to be simplified versions of clay figurines), stick-shaped clay objects (thought to be a miniature pottery version of stone rods), stamp-shaped stones (thought to be modelled after female genitalia), walnut clay objects (created by pressing clay against inner shell of walnuts), and pottery with human figure (theorized to be shamans with head ornaments and tools).
Sword-shaped artefacts made of whale bone have been excavated and are thought to have been used in fire related rituals as most have burned marks. The JÃ Âmon also crafted stone batons or rods and swords which are thought to have been used for rituals and festivals as many have been exposed to fire. Other artefacts such as large jade beads have also been exposed to fire.
In Sannai Maruyama, a large structure made of 6 great pillars of chestnuts between 1 and 2 meters in diameter has been repeatedly built through the ages. It is thought to have played multiple roles such as a ritual venue, totem pole, observatory, lighthouse, and watchtower.
Graves were different for different people with adult graves being different from children's and from a few important people.
Most graves did not contain grave goods. For those that had them, it is believed that men and women were buried with different objects: hunting tools and stone arrowheads, and cooking utensils such as saddle quern respectively.
In Sannai Maruyama, pit graves have been excavated on both sides of roads, feet towards the road at slight angles. At this same site, pillar-supported structures may have been used for temporary resting place for the deceased.
It is not known what language or languages were spoken in Japan during the JÃ Âmon period. Suggested languages are: the Ainu language, Japonic languages, Austronesian languages, or unknown and today extinct languages. While the most supported view is to equate the Ainu language with the JÃ Âmon language, this view is not uncontroversial or easily acceptable as there were probably multiple distinct language families spoken by the JÃ Âmon period population of the Japanese archipelago.
Alexander Vovin (1993) argues that the Ainu languages originated in central Honshu, and were later pushed northwards into Hokkaido, where the early Ainu-speakers merged with local groups, forming the historical Ainu ethnicity. Bilingualism between Ainu and Japanese was common in Tohoku until the 10th century. According to Vovin (2021) there is also some evidence for the presence of Austronesian languages close to the Japanese archipelago, which may have contributed some loanwords to early Japanese.
Some linguists suggest that the Japonic languages may have been already present within the Japanese archipelago and coastal Korea, before the Yayoi period, and can be linked to one of the JÃ Âmon populations of southwestern Japan, rather than the later Yayoi or Kofun period rice-agriculturalists. Japonic-speakers rapidly grew during the Yayoi period by assimilating the newcomers, adopting rice growing, and fusing mainland Asian technologies with local traditions.
The JÃ Âmon people represent the descendants of Upper Paleolithic inhabitants from the Japanese archipelago, who became isolated from other mainland Asian groups about 22,000 to 25,000 years ago. They have been described as "one of the most deeply diverged populations in East Asia".
The JÃ Âmon lineage is inferred to have diverged from Ancient East Asians between 25 and 38,000 years ago, after the divergence of the Basal East Asian Tianyuan and Hoabinhian lineages, but before Ancient East Asians split into Ancient Northern East Asians and Ancient Southern East Asians. Like other East Asian populations, the ancestors of the JÃ Âmon people are suggested to have originated from Southeast Asia and expanded northwards to East Asia via both an interior and a coastal route. They represent one of the "earliest waves of migration". Although the JÃ Âmon lineage can be modeled as a mixture of "basal Asian" (Hoabinhian/Onge-related) ancestries and derived East Asian-related ancestries, especially those related to Ancient Southern East Asians or Ancient Northern East Asians, including populations from coastal Northeastern China, the Devil's Gate Cave etc., other studies argue for an unadmixed lineage which split after those "basal Asian" lineages diverged from present-day East Asians. Subsequent studies found that Hoabinhians are an unlikely source for deeper ancestry in the JÃ Âmon. Instead, a yet unidentified deep East Asian source is suggested.
Overall, JÃ Âmon ancestry consistently forms a clade with Ancient Northern and Southern East Asians. They diverged from Ancient East Asians around the same time as the Longlin specimen from Guangxi, China although other studies show an earlier divergence date for the latter. The JÃ Âmon likewise diverged from Ancient East Asians much later than the basal Asian Xingyi_EN lineage found in Yunnan, China. According to Wang et al. (2025), the ancestors of Ancient East Asians were a mixture of Tianyuan-related and Xingyi_EN-related lineages. The JÃ Âmon also exhibit a high degree of genetic homogeneity, which is attributed to "strong bottleneck and small effective population size".
Beyond their genetic affinities with other East Eurasian lineages, the JÃ Âmon display weak but marginally relevant genetic affinity with the Yana Rhinoceros Horn Site specimen, associated with Ancient North Eurasians (or Ancient North Siberians). This indicates gene flow between Ancient North Siberians and the ancestral JÃ Âmon prior to the JÃ Âmon's isolation from other East Eurasians. This gene flow is also associated with the introduction of microblade technology to Northern Japan. According to Bennett et al. (2024), the Basal Asian-like ancestors of the JÃ Âmon may have interacted with groups that entered Siberia through a northern migration route, thus explaining the observed affinities between the JÃ Âmon and Ancient North Siberians. Other studies found no evidence for direct ANE-related gene flow into the JÃ Âmon. However, the possibility of small non-East Eurasian input is not completely ruled out. According to Yang et al. (2025), whilst the JÃ Âmon have the lowest Denisovan ancestry among East Asians like West Eurasians, it is not attributed to either West Eurasian or Hoabinhian admixture, which is not found in the JÃ Âmon. Instead, it suggests partial descent from an East Asian lineage with no or low Denisovan ancestry.
There is also evidence of genetic affinities between the JÃ Âmon and lowland coastal East Asians. These affinities imply later contact episodes between the JÃ Âmon and other East Eurasian populations but the direction of gene flow is unclear. Alternatively, they reflect shared ancestry. Other studies show little to no gene flow from continental Asians (e.g. Austronesians) into the JÃ Âmon, including Ryukyuan JÃ Âmon. Overall, the JÃ Âmon are not closely related to most Asian populations besides modern Japanese and Ulchi. Full genome studies on multiple JÃ Âmon remains revealed them to carry gene alleles associated with a higher alcohol tolerance, wet earwax, no derived variant of the EDAR gene, and that they likely frequently consumed fatty sea and land animals. They also carried alleles for medium to light skin, dark and fine/thin hair, and brown eyes. Some samples also displayed a higher risk of developing liver spots as a result of excessive sun exposure.
Genetic data further indicates that the JÃ Âmon peoples were genetically predisposed for higher triglyceride and blood sugar levels, increasing the risk of obesity. At the same time, it gave them resistance to starvation. Modern Japanese share these alleles with the JÃ Âmon period population, although at lower and variable frequency, in line with the inferred admixture among modern Japanese peoples. Watanabe et al. stated that the genetic predisposition for shorter stature among Japanese people often correlates with high JÃ Âmon ancestry, with the opposite correlating with high continental East Asian ancestry. However, Yamamoto et al. (2024) stated that the association of JÃ Âmon ancestry with the decrease of height is observable only if principal components are not accounted for in the test, indicating that this association can be confounded by population stratification. They also found indications for an influence on the Body mass index, including a higher risk of obesity among modern Japanese, but also higher frequency of "active functions in skeletal muscle cells" and "increased bone mineral density", which may have been related to the hunter-gatherer lifestyle of the JÃ Âmon people.
It is thought that the haplogroups D-M55 (D1a2a) and C1a1 were frequent among the historical Jà Âmon period people of Japan. One 3,800-year-old Jà Âmon man excavated from Rebun Island was found to belong to Haplogroup D1a2b1(D-CTS 220). Today, haplogroup D-M55 is found in about 35% and haplogroup C1a1 in about 6% of modern Japanese people. D-M55 is found regularly only in Japanese (Ainu, Ryukyuans, and Yamato) and Koreans (albeit with much lower frequency). D-M55 also has been observed in Micronesia 5.1%, Timor 0.2%, China 0âÂÂ0.4%, this is explained by recent admixture, dating back to the Japanese empire (1868âÂÂ1945) occupation of those regions. Haplogroup C1a1 has been found regularly in about 6% of modern Japanese. Elsewhere, it has been observed sporadically in individuals from South Korea, North Korea (South Hwanghae Province), and China (ethnic Korean in Ning'an and Han Chinese in Linghai, Guancheng Hui District, Haigang District, and Dinghai District). A 2021 study estimated that the frequency of the D-M55 clade increased during the late Jà Âmon period. The divergence between the D1a2-M55 and the D1a-F6251 subclades (the latter of which is common in Tibetans, other Tibeto-Burmese groups, and Altaians, and has a moderate distribution in the rest of East Asia, Southeast Asia, and Central Asia) may have occurred near the Tibetan Plateau.
The MtDNA haplogroup diversity of the JÃ Âmon people is characterized by the presence of haplogroups M7a and N9b. Studies published in 2004 and 2007 show the combined frequency of M7a and N9b observed in modern Japanese to be from 12~15% to 17% in mainstream Japanese. N9b is frequently found among the Hokkaido JÃ Âmon while M7a is found frequently among the Honshu JÃ Âmon. However N9b is found only at very low percentage among the Honshu JÃ Âmon. Both M7a and N9b have coalescent times about 10,000 years ago. Studies have suggested that M7a originated from westward migrations from the Korean peninsula while N9b was introduced from Northeast Asia via Sakhalin and Hokkaido. However, it is likely that these haplogroups were indigenous to the Japanese archipelago, with early JÃ Âmon being "located on branches closer to the root". Haplogroup M7a now has its highest frequency in Okinawa.
Using the Fossa Magna as the boundary line, M7a was more common in western JÃ Âmon while N9b was more common in eastern JÃ Âmon, which can be explained by genetic drift rather than different genetic backgrounds for various JÃ Âmon settlers. Other studies state that M7a was present at all sites in Early JÃ Âmon Japan, whether northern or southern, although N9b was not found at any site below Kyushu. In Middle JÃ Âmon Japan, M7a and N9b were both observed, especially at the Chiba Prefecture. In Late JÃ Âmon Japan, M7a was present in Hokkaido and Okinawa. N9b was common in Funadomari while D4b2 and D4h2 were common in the Shomyoji shell midden and Funadomari respectively. In the Final JÃ Âmon, N9b prevailed in Hokkaido while N9b and M7a were both observed in Honshu. The following sites in Hokkaido have these common haplogroups; G1b at Usu-Moshiri, G1b and D4h2 at Usu-Moshiri, G1b at Minami-Usu 6 and D4h2 at Onkoromanai. According to a 2025 study, haplogroup M7 diverged into M7a and M7b'c, which further split into M7b and M7c, with the latter two being common in Southern East Asia.
Although there is regional variance among different JÃ Âmon remains, they displayed an overall coherent morphology. Historically, the JÃ Âmon people were classified as "South Mongoloid" or "Proto-Mongoloid"; displaying specific affinities with Native Americans and to an extent, Negrito samples.
They broadly resemble groups such as "[...] Southeast Asians, Upper Paleolithic Asians, or Northeastern Asians, as well as present-day indigenous populations of the Ainu of Hokkaido and Ryukyu Islanders", as well as Cro-Magnon populations. Certain JÃ Âmon features indicate long-term adaptation to a hunter-gatherer lifestyle and to an extent, colder climates. Close morphological similarities also exist between the JÃ Âmon people and the ~33,000 to 23,000 years old Liujiang man from Guangxi, China and the Minatogawa Man from Okinawa.
The JÃ Âmon additionally display affinities with putative Australo-Papuan groups, specifically prehistoric populations from Southern East Asia, such as the Hoabinhian hunter-gatherers, and Northern China, such as the Upper Paleolithic Zhoukoudian remains. They possessed traits such as 'dolichocephalic calvaria, large zygomatic bones, remarkably prominent glabellae and superciliary arches, concave nasal roots, and low and wide faces', yet were genetically closer or ancestral to later East Asians despite phenotypic discontinuities. These Paleolithic variations were lost in modern Eastern Asian populations due to long-term demographic replacement. Dental morphology suggests that the JÃ Âmon had Sundadont dental structure, which is more common among modern Southeast Asians and indigenous Taiwanese. Sundadonty is ancestral to the Sinodont dental structure commonly found among modern Northeast Asians, suggesting that the JÃ Âmon split from the common "Ancestral East Asians" prior to the formation of modern Northeast Asians.
Chatters, citing anthropologist C. Loring Brace, classified JÃ Âmon and Polynesians as a single craniofacial "JÃ Âmon -Pacific" cluster. Chatters, citing Powell, noted that the JÃ Âmon most resembled the Native American Kennewick Man and Polynesians. According to him, the Ainu descend from the JÃ Âmon people, an East Asian population with "closest biological affinity with south-east Asians rather than western Eurasian peoples".
Kondo et al. analyzed the regional morphological and craniometric characteristics of the JÃ Âmon-era population of Japan, and found that they were morphologically heterogeneous and displayed differences along a Northeast to Southwest cline. Differences were based on the cranial index, with Hokkaido Epi- JÃ Âmon crania being mesocephalic and Okinawan crania being brachycephalic. They concluded that the "JÃ Âmon skulls, especially in the neurocranium, exhibit a discernible level of northeast-to-southwest geographical cline across the Japanese archipelago, placing the Hokkaido and Okinawa samples at both extreme ends. The following scenarios can be hypothesized with caution: (a) the formation of JÃ Âmon population seemed to proceed in eastern or central Japan, not western Japan (Okinawa or Kyushu regions); (b) the Kyushu JÃ Âmon could have a small-sized and isolated population history; and (c) the population history of Hokkaido JÃ Âmon could have been deeply rooted and/or affected by long-term extrinsic gene flows." They also suggested that regional differences in cranial length is based on environmental effects.
According to a 2023 study, there were no significant differences in craniofacial or facial shapes within the JÃ Âmon. However, Southern and Western JÃ Âmon often have more globular neurocraniums when viewed in the sagittal plane compared to Northeastern Honshu JÃ Âmon, who often have high and large frontal regions, along with low, more compressed and angled occipital regions. This reflects a shift towards agricultural lifestyles among Southern and Western JÃ Âmon whilst older forager lifestyles were upheld by Northeastern Honshu JÃ Âmon. JÃ Âmon from Southern and Western Japan and inland central Honshu also differ from JÃ Âmon from coastal central Honshu, Northeastern Honshu and Hokkaido in terms of their temporalis muscle region, reflecting differential influences of plant-based and marine-based diets respectively. The former JÃ Âmon group are described as having "an anteroposteriorly shorter, superoinferiorly taller temporalis region with a mediolaterally narrower temporal fossa". A 2025 study shows no significant inter-phase or geographical differences among different JÃ Âmon specimens. However, variations within phases and geographical regions are more salient.
Craniofacial features of the JÃ Âmon people were significantly retained by the Ainu and Okinawans/Ryukyuans. The Ainu have 2 genes "associated with facial structure in Europeans" but still possessed hair and teeth morphology found in East Asians. In regards to facial flatness, the Ainu were intermediate between Caucasoids and Mongoloids but another study states that they were well within the Mongoloid range. Ainu also exhibit strong influence from Northeast Asian populations. Meanwhile, Okinawans/Ryukyuans have a "well-defined and less flat upper face", which is characterized by a prominent glabella and nasal root. Among contemporary Japanese subpopulations, Southern Japanese exhibit strong similarities with JÃ Âmon and Ainu groups, as well as Yayoi groups, and are relatively less impacted by Northeast Asian groups. Other Japanese subpopulations show intermediate affinities with the JÃ Âmon, especially the Hokkaido Ainu, except for Kinki populations, who show the most morphological disparities. Morphological affinities with the Hokkaido Ainu are moderately strong for contemporary Tohoku populations.
A gene common in JÃ Âmon people is a retrovirus of ATL (human T lymphotropic virus, HTVL-I). This virus was discovered as a cause of adult T cell leukemia (ATL), and research was advanced by Yorio Hinuma of Kyoto University Virus Research Institute.
Although it was known that many virus carriers existed in Japan, it was not found at all in neighboring countries of East Asia. Meanwhile, it has been found in many Africans, Native Americans, Tibetans, Siberians, Burmese people, Indigenous people of New Guinea, Polynesians, etc. Looking at distribution in Japan, it is seen particularly frequently in southern Kyushu, Nagasaki Prefecture, Okinawa and among the Ainu. And it is seen at medium frequency in the southern part of Shikoku, southern part of the Kii Peninsula, the Pacific side of the TÃ Âhoku region (Sanriku) and Oki Islands. Overall, carriers of the ATL retrovirus were found to be more common in remote areas and remote islands. When examining the well-developed areas of ATL in each region of Kyushu, Shikoku, and TÃ Âhoku in detail, carriers are preserved at high rates in small settlements that were isolated from the surroundings and inconvenient for traffic.
The path of natural infection of this virus is limited to vertical infection between women and children (most often through breastfeeding) and horizontal infection between males and females (most often from males to females through sexual intercourse).
Based on the above, Hinuma concluded that the high frequency area of this virus indicates that high density remains of JÃ Âmon people.
Full genome analyses of Okhotsk culture remains on Sakhalin show their descent from three major ancestral sources, notably Ancient Northeast Asians, Ancient Paleo-Siberians, and Jà Âmon people of Japan. An admixture analysis revealed them to carry c. 54% Ancient Northeast Asian, c. 22% Ancient Paleo-Siberian, and c. 24% Jà Âmon ancestries respectively. Jà Âmon ancestry is detected in other Far East Siberian individuals such as the 7,000-year-old Letuchaya Mysh individual and an outlier from the Middle Neolithic Boisman population (c. 29.7% ñ 9.8%).
Genetic analyses on ancient remains from the southern Korean Peninsula during the Three Kingdoms period reveal elevated Jà Âmon ancestry at c. 37%, while Yayoi remains in Japan were found to carry nearly equal amounts of Jà Âmon ancestry (35âÂÂ60%) and Ancient Northeast Asian-like ancestry (40âÂÂ65%). These results suggest the presence of the Jà Âmon people and their culture or a Jà Âmon-like population on the Korean peninsula and their significant contribution to the formation of early Japonic-speakers. As such, the "agricultural transition in prehistoric Japan involved the process of assimilation, rather than replacement, with almost equal genetic contributions from the indigenous Jà Âmon and mainland Asian migrants of the Mumun/Yayoi period". The Jà Âmon-like ancestry in Korea was 'diluted' during the Late Neolithic to Bronze Age periods due to arrivals of West Liao River farmer-related groups from Northeastern China. An analysis of some individuals from Northwestern Kyushu showed that some Yayoi-era individuals had 100% Jà Âmon ancestry, implying that admixture between Jà Âmon peoples and continental East Asian migrants was gradual.
The Yokchido individual from ancient Korea is estimated to have 95âÂÂ100% Jà Âmon-related ancestry and shows the closest genetic affinities with the Late Jà Âmon individual from Shikoku. Several ancient Northeast Asian individuals from inland East Asia (Yumin) and the Devil's Gate Cave (NEO240) can also be modeled as mixtures of deep lineages that are ancestral to the Jà Âmon and Tianyuan respectively, despite NEO240 being more related to the Jà Âmon.
The Ainu have the highest proportion of Jà Âmon ancestry among modern populations, estimated at up to 70%, followed by the Ryukyuan/Okinawan people at around 30%, and mainland Japanese at approximately 10âÂÂ20%. Overall, Jà Âmon ancestry peaks in the northernmost and southernmost parts of Japan (Hokkaido and Okinawa, respectively), followed by Tohoku and Kanto. Residents of Tà Âhoku, Kantà Â, and Kyà «shà « show closer genetic affinities with Ryukyuans. Genetic relatedness between the Ainu and mainland Japanese is likewise strong in western Hokkaidà  and Aomori. It is also believed that mainland Japanese primarily derive their Jà Âmon ancestry from western Jà Âmon populations. Conversely, Jà Âmon ancestry is the lowest in Kinki and Shikoku, where Yayoi ancestry is more dominant. Yamamoto et al. 2024 found a wide range of Jà Âmon ancestry within different Japanese subgroups, ranging from 10âÂÂ32%. According to a 2025 study, mainland Japanese derive ~20% of their ancestry from Jà Âmon peoples and are especially close to Early and Middle Jà Âmon specimens from Kumamoto and Tokyo respectively.
In modern Koreans, JÃ Âmon ancestry is present at about 5%. JÃ Âmon-related ancestry is also present in several Siberian (particularly in the Ulchi at 7% and Nivkh at 10%) and Southeast Asian groups.
Aspects of the JÃ Âmon culture and pottery were used in the video game '. The art director of Nintendo Takizawa Satoru said that the JÃ Âmon culture was the inspiration for the "Sheikah Slates, shrines and other ancient objects" in the game.
A recreated JÃ Âmon village in the form of an experience park (Sarashina no Sato), which offers different activities, can be visited in Chikuma, Nagano.