List of territories acquired by the Empire of Japan



This is a list of regions occupied or annexed by the Empire of Japan until 1945, the year of the end of World War II in Asia, after the surrender of Japan. Control over all territories except most of the Japanese mainland (Hokkaido, Honshu, Kyushu, Shikoku, and some 6,000 small surrounding islands) was renounced by Japan in the unconditional surrender after World War II and the Treaty of San Francisco. A number of territories occupied by the United States after 1945 were returned to Japan, but there are still a number of disputed territories between Japan and Russia (the Kuril Islands dispute), South Korea and North Korea (the Liancourt Rocks dispute), the People's Republic of China and Taiwan (the Senkaku Islands dispute).

Colonies

 * Taiwan and the Penghu Islands – 1895–1945
 * Karafuto – 1905–1943
 * Kantō – 1905–1945
 * Chōsen – 1910–1945
 * Kiautschou Bay Leased Territory – 1914–1922
 * Nan’yō 1919–1945

Occupied territories

 * All ports and major towns in the Primorsky Krai and Siberia regions of Russia east of the city of Chita, from 1918 until gradually withdrawing in 1922.
 * North Sakhalin was occupied by Japan 1920–1925.

World War II
Disclaimer: Not all areas were considered part of Imperial Japan but rather part of puppet states & sphere of influence, allies, included separately for demographic purposes. Sources: POPULSTAT Asia Oceania

Other occupied islands during World War II:
 * Andaman Islands (India) – March 29, 1942 – September 9, 1945
 * Christmas Island (Australia) – March 1942 – October 1945
 * Attu and Kiska (Alaska, United States) – June 3, 1942 – August 15, 1943

Areas attacked but not conquered

 * Kohima and Manipur (India)
 * Dornod (Khalkhin Gol, Mongolia)
 * Midway Atoll (United States)

Raided without immediate intent of occupation

 * Air raids
 * Pearl Harbor (Hawaii, United States)
 * Colombo and Trincomalee (Sri Lanka)
 * Calcutta (India)
 * Chittagong (Bangladesh)
 * Air raids on Australia, including:
 * Broome (Western Australia, Australia)
 * Darwin (Northern Territory, Australia)
 * Townsville (Queensland, Australia)
 * Dutch Harbor (Alaska, United States)
 * Lookout Air Raids (Oregon, United States)
 * Naval bombardment by submarine
 * British Columbia (Canada)
 * Ellwood (Santa Barbara, California, United States)
 * Fort Stevens (Oregon, United States)
 * Newcastle (New South Wales, Australia)
 * Gregory (Western Australia, Australia)
 * Midget sub attack
 * Sydney (New South Wales, Australia)
 * Diego Suarez (Madagascar)