| People Killed | Government | Years |
| 61,911,000 | U.S.S.R. | 1917-87 |
| 35,236,000 | China (PRC) | 1949-87 |
| 20,946,000 | Germany | 1933-45 |
| 10,075,000 | China (KMT) | 1928-49 |
| 5,964,000 | Japan | 1936-45 |
| 3,466,000 | China (Mao Soviets) | 1923-49 |
| 2,035,000 | Cambodia | 1975-79 |
| 1,883,000 | Turkey | 1909-18 |
| 1,670,000 | Vietnam | 1945-87 |
| 1,663,000 | North Korea | 1948-87 |
| 1,585,000 | Poland | 1945-48 |
| 1,503,000 | Pakistan | 1958-87 |
| 1,417,000 | Mexico | 1900-20 |
| 1,072,000 | Yugoslavia (Tito) | 1944-87 |
| 1,066,000 | Russia | 1900-17 |
| 910,000 | China (Warlords) | 1917-49 |
| 878,000 | Turkey (Ataturk) | 1919-23 |
| 816,000 | United Kingdom | 1900-87 |
| 741,000 | Portugal (Dictatorship) | 1926-82 |
| 729,000 | Indonesia | 1965-87 |
| 13,637,000 | Others | 1900-87 |
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