Japanese holdouts () were soldiers of the Imperial Japanese Army (IJA) and Imperial Japanese Navy (IJN) in the Pacific Theatre of World War II who continued fighting after the surrender of Japan at the end of the war for a variety of reasons. Japanese holdouts either doubted that Japan had surrendered, were not aware that the war had ended because communications had been cut off by Allied advances, feared they would be executed if they surrendered to Allied forces, or felt bound by honor and loyalty never to surrender.
After Japan officially surrendered on 2 September 1945, Japanese holdouts in Southeast Asia and the Pacific islands that had been part of the Japanese Empire continued to fight local police, government forces, and Allied troops stationed to assist the newly formed governments. For nearly 30 years after the end of the war, dozens of holdouts were discovered in the jungles of Southeast Asia and the Pacific, with the last verified holdout, Private Teruo Nakamura, surrendering on the island of Morotai in 1974. Although newspapers throughout East Asia and the Pacific reported more holdouts and searches continued until 2005, no additional holdouts were found.
In 1981, a Diet of Japan committee mentioned newspaper reports that holdouts were still living in the forest on Vella Lavella in the Solomon Islands. However, it is believed that these were hoaxes made up to lure Japanese tourists to the islands. Searches for holdouts were conducted by the Japanese government on many Pacific islands throughout the 1980s, but the information was too scant to take any further action, and the searches ended by 1989. In 1992, it was reported that a few holdouts still lived on the island of Kolombangara, though subsequent searches were unable to find any evidence. An investigation into similar reports of holdouts on Guadalcanal in 2001 failed to turn up evidence.
The last report taken seriously by Japanese officials took place in May 2005, when two elderly men emerged from the jungle in the Philippines claiming to be ex-soldiers. It was initially assumed that the media attention scared the two men off as they disappeared and were not heard from again. Suspicions of a hoax or a kidnapping attempt later mounted as the area where the alleged soldiers emerged from is "notorious" for ransom kidnappings and attacks by Islamist separatists. It was reported by Tokyo Shimbun on May 31, 2005, that unconfirmed information about remaining Japanese soldiers is said to be rampant in the Philippines. These reports are connected to scams tied to wealth, such as the alleged location of Yamashita's gold and (The M Fund). It is unknown how many or if any legitimate Japanese holdouts remain today, but after over three quarters of a century since the end of the war, harsh jungle terrain, and equatorial climates, it is highly unlikely that any are still alive. The National WWII Museum reported in 2022 that surviving veterans are "dying quickly", as those who served are now "in their 90s or older".