List of territories acquired by the Empire of Japan

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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).

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Members of the Greater East Asia Co-Prosperity Sphere; territory controlled at maximum height. Japan and its allies in dark red; Thailand and Free India. Occupied territories/client states in lighter red. Korea, Taiwan, and Karafuto (South Sakhalin) were integral parts of Japan.
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Maximum extent of the Japanese empire

Pre-WWI

Colonies

Occupied territories

WWI

Colonies

Occupied territories

Siberian intervention

Occupied territories

  • Japanese occupation of Vladivostok

World War II

Summarize
Perspective
More information Territory, Japanese name ...
Territory Japanese name Date Population est. (1944) Notes
South SakhalinKarafuto Prefecture (樺太庁)1905–1943406,000Elevated to naichi status in 1943.
Mainland ChinaChūgoku tairiku (中国大陸)1931–1945200,000,000 (est.)Manchukuo 50 million (1940), Rehe, Kwantung Leased Territory, Jiangsu, Shanghai, Shandong, Hebei, Beijing, Tianjin, plus parts of : Guangdong, Guangxi, Hubei, Hunan, Fujian, Guizhou, Inner Mongolia
Japan propernaichi (内地)1868–194576,200,000Present day Japan, South Sakhalin (after 1943), and Kuril Islands
KoreaChōsen (朝鮮)1910–194525,500,000
TaiwanTaiwan (臺灣)1895–19456,586,000
Hong KongHon Kon (香港)December 25, 1941 – August 30, 19451,400,000Hong Kong (UK)
:: East Asia (subtotal)Higashi Ajia (東アジア)310,092,000
VietnamAnnan (安南)September 1940 – August 194522,122,000As French Indochina (FR)
CambodiaKanbojia (カンボジア)August 1941 - August 19453,100,000As French Indochina, Japanese occupation of Cambodia
LaosRaosu (ラオス)September 1940 – August 1945 1,400,000As French Indochina, Japanese occupation of Laos
ThailandTai (タイ)December 8, 1941 – August 15, 194516,216,000Independent state but allied with Japan
MalaysiaMaraya (マラヤ), Kita Boruneo (北ボルネオ), Marai (マライ)December 8, 1941 – September 2, 1945 (Malaya), December 1941 – September 1945 (Sarawak, Brunei, Labuan, North Borneo)4,938,000 plus 39,000 (Brunei)As Malaya (UK), British Borneo (UK), Brunei (UK)
PhilippinesFiripin (フィリピン)May 8, 1942 – September 194517,419,000Philippines (US)
Dutch East IndiesHigashi Indo (東印度), Sumatora Nishikaigan (スマトラ西海岸)1942 – 194572,146,000Dutch East Indies (NL), West Coast Sumatra (NL)
SingaporeSyōnan-tō (昭南島) February 15, 1942 – September 12, 1945795,000Singapore (UK)
Burma (Myanmar)Biruma (ビルマ)May 28, 1942–September 13, 194516,800,000Burma (UK)
East TimorHigashi Chimōru (東チモール)February 19, 1942 – September 11, 1945450,000Portuguese Timor (PT)
:: Southeast Asia (subtotal)Tōnan Ajia (東南アジア)155,452,000
Manipur[2][3]Manipurū (マニプール)October 21, 1943 – August 18, 1945525,000[4]Azad Hind[5][6][7] (also independent but Japanese-allied)
:: South Asia (subtotal)Minami ajia (南亞細亞)-525,000
New GuineaNyū Ginia (ニューギニア)1941 - 19451,400,000As Papua and New Guinea (AU)
GuamŌmiya-tō (大宮島)December 10, 1941 – August 10, 1944from Guam (US)
South Seas MandateNan'yō Guntō (南洋群島)1919–1945129,000from German Empire
NauruNauru (ナウル)August 26, 1942 – September 13, 19453,000Occupied from the United Kingdom, Australia, and New Zealand
Wake Island, USŌtori-shima, -jima (大鳥島)December 23, 1941 – September 4, 1945nilUS
KiribatiKiribasu (キリバス)December 1941 – 194528,000from Gilbert Islands (UK)
:: Pacific Islands (subtotal)1,433,000
:: Total Population466,069,000
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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[8] Oceania[9]

Other occupied islands during World War II:

Areas attacked but not conquered

Raided without immediate intent of occupation

See also

References

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