War and its Consequences

Stockholm International Peace Research Institute

Project Ploughshares

Megadeaths of the Twentieth Century  
Matthew White

Freedom, Democracy, Peace; Power, Democide, War  
University of Hawaii

Some of America's War Deaths InfoPlease

List of Wars 1900 to 1944 Wikipedia

List of Wars 1945 to 1989 Wikipedia

List of Wars 1990 to 2003 Wikipedia

Mass Deaths and Atrocities of the Twentieth Century Wikipedia

Deaths in War and Conflicts Milton Leitenburg's essay (pdf)

Matthew White's Hemoclysm

• 27,000,000-72,000,000 - Communist China (1949-1975) under Mao Zedong [2]

• 5,000,000 - 30,000,000[4] - War crimes of Imperial Japan, especially in China, 1930's-1945, under Hideki Tojo and others. 
  See also Japanese war crimes.

• 5,000,000–12,000,000 - Genocides of Nazi Germany {1930's-1945) under Adolf Hitler (see also Nazi internments and Holocaust in Europe), including:

  • 5,100,000–6,000,000 - Jews

  • 3,500,000–6,000,000 - Slavs

  • 3,000,000 - victims of camps of other nationalities, mostly Eastern European

  • 2,600,000–4,000,000 - Soviet prisoners of war

  • 1,000,000+ - Political prisoners

  • 250,000–1,000,000 Roma

  • ~100,000 - Jasenovac concentration camp in Croatia

  • 70,000–275,000 Disabled

  • 10,000–220,000 Homosexuals

• 5,000,000 - 30,000,000 - Congo Free State (1877 - 1908) under King Leopold II of Belgium.

• 4,000,000 - 50,000,000 - Soviet Union (1924-1953) under Joseph Stalin[5]

• 2,000,000–3,000,000 - Cambodia (1975-1979) under Pol Pot

• 1,000,000–3,000,000 Armenian Massacres (1895-1923) . Most cited number is 1.5 million. Includes:

  • 6,000–30,000 - 1909

  • 600,000–2,000,000 - Second Armenian Massacre (1915-1918)

  • 250,000–500,0000 - (1919-1923)

• 937,000 - Genocide in Rwanda (Rwanda, 1994)

• 800,000–1,000,000 - India/Pakistan Partition, (1947-1948)

• ~400,000 - Ustasha/Independent State of Croatia genocide of Serbs, Jews, Roma people during World War II (1941-1945)

• 300,000 - Uganda (1971-1979) under Idi Amin

• 250,000–1,000,000 - Indonesia (1965-1966) under President Suharto (anti-communist purges).

• 182,000 - Iraq (1986-1989) under Saddam Hussein, see also Al-Anfal Campaign

• 150,000 - 300,000 East Timor (1970's) under President Suharto

• 130,000-200,000 - Guatemala (1962-1996), under Rios Montt and others see also civil war and highland massacres

• 40,000–100,000 - Namibia (1904-1908). See also Herero massacre

• 30,000 - Haiti (1964 - 1971) under François "Papa Doc" Duvalier

• 10,000 - Bosnian Genocide

• 10,000–30,000 - Argentina's Dirty War, (Argentina, 1976 - 1983)

• 3,000 - Chile (1973 - 1990) under Augusto Pinochet