is a city in Miyazaki Prefecture, Japan. , the city had an estimated population of 57,746, and a population density of 170 persons per kmò., making it the 4th largest city in Miyazaki Prefecture in terms of population. The total area of the city is . Hyà «ga is a port city known for the production of Go stones and for beaches, many of which are popular surfing spots.
Hyuga City took its name from , the historical name of what is now Miyazaki Prefecture. According to Japanese legend in the Nihon Shoki, following the conquest of the Kumaso people, Emperor Keikà  watched the sunrise over the ocean and said . From that time, the province was known as Hyuga or Hinata (the country facing the sun) until the Meiji Restoration when it was renamed Miyazaki.
Hyà «ga is located in central Miyazaki Prefecture. It is bordered by the Hyà «ga Sea to the east and the Kyushu Mountains to the west. The area along Cape Hyà «ga with its exposed hexagonal pillar rocks and ria (saw tooth) coastline are designated as part of the Nippà  Kaigan Quasi-National Park. A bit south are beaches such as Ise-ga-hama, Okura-ga-hama, and Kane-ga-hama, known for their surfing.
Hyà «ga is located in the humid subtropical climate zone (Köppen climate classification: Cfa), exhibiting four distinct seasons. It has a mild, but humid subtropical climate with no dry season. The climate is comparable to the southern coastal areas of the United States or southern Europe. The average summer daytime temperature is about 30 ðC (86 ðF) with 80% humidity. The average winter daytime temperature is about 13 ðC (56 ðF) with 60% humidity. Early summer is marked with the rainy season in June and July. This is followed by a hot, humid summer and daily sunshine, but is often accompanied by typhoons. Winter is mild with small amounts of rain.
, Hyà «ga had a total population of 63,011 people; 30,150 males and 32,861 females.
is Hyà «ga's downtown area. Hyà «ga City has been engaged in large scale urban renewal, slowly widening roads, creating new businesses, beautifying, and modernizing the city center. As such, Shinmachi is relatively new and modern. This region is centered on Hyà «gashi Station.
The southern part of Hososhima is centered on Hyà «ga's commercial fishing port between Komenoyama and Makishimayama. This is an older less frequented part of Hyà «ga. The streets are narrow and there are numerous old Edo-period buildings.
The northern part of Hososhima is far more industrial. This region has several manufacturing plants and large areas for storage of goods and raw materials. Hososhima Industrial Port currently serves as the main international port in northern Miyazaki Prefecture handling materials and goods import and export in the region. Hososhima Industrial Port is designated as a Special Major Port and was selected as a focus port by the Japanese government in 2010. There continues to be major development and expansion of the port and its available services. Hososhima Port was selected by the Japanese government as Port of the Year 2015.
Mimitsu was a port town to the south of Hyà «ga which merged in 1955. It is famous for washi paper and fishing. It is also supposedly the port from which the first Japanese Emperor, Jimmu, launched his military expedition to conquer Yamato and establish it as the center of power.
In the 19th century, it was a prosperous commercial port that was a hub for trade with the cities of Kyoto, Osaka, and Kobe, with so many houses belonging to merchants and shipping agents crowded together that people used to refer to the thousand houses of Mimitsu (Mimitsu-sengen). It fell into sharp decline with the advent of railroads. In 1986, it was designated as a national important preservation district for groups of historic buildings, and much of the 19th-century atmosphere, including traditional buildings, earthen walls, and stone pavements, remains.
Tà Âgà  was a small mountain town which merged with Hyà «ga on February 25, 2006. Togo was the home town of the Japanese writer Bokusui Wakayama.
Archaeologists working in Hyà «ga have reported finding artifacts such as stone tools and stone piles from as much as 30,000 years ago, the Japanese Paleolithic period. There is also evidence of inhabitation during the Jà Âmon period. Archaeological digs uncovering pottery from this time period continue today in parts of the city.
During the Edo period, Hyà «ga was divided between the holdings of Nobeoka Domain and tenryà  territory administered directly by the Tokugawa shogunate. Following the Meiji Restoration, the town of Hososhima and villages of Iwawaki ad Tomidaka were established on May 1, 1889 with the creation of the modern municipalities system. Tomidaka was raised to town status on October 1, 1921. On October 1, 1937, Hososhima and Tomidaka merged to form Toshima Town. Toshima merged with Iwawaki to form the city of Hyà «ga on April 1, 1951.
Modern Hyà «ga City is a result of the merger of numerous smaller towns and villages. These mergers began at the start of the Meiji Period when the han system was abolished and the concept of towns and cities arose. This time period, between 1888 and 1889, became known as the Great Meiji Consolidation. Following this, towns continued to merge mainly due to population limitations or financial limitations. The most recent merger in 2006 with Tà Âgà  (from Higashiusuki District) was part of the Great Heisei Consolidation. This was a government initiative to counter population declines and financial problems while promoting decentralization of the national government. This merger increased Hyuga City's population, tax money, and autonomy.
Hyà «ga has a mayor-council form of government with a directly elected mayor and a unicameral city council of 20 members. Hyà «ga contributes two members to the Miyazaki Prefectural Assembly. In terms of national politics, the city is part of the Miyazaki 2nd district of the lower house of the Diet of Japan.
Hyà «ga is a major industrial center, with many chemical plants belonging to the Asahi Kasei group. Other major industries include smelting, titanium production and food processing.
Hyà «ga has 13 elementary schools, seven junior high schools and three high schools. The Miyazaki Board of Education also operates one special education school for the handicapped.