| Communist/Marxist Control | Country |
| Communist 1922-91 | |
| Communist 1924-92 | |
| Communist 1943-92 | |
| Communist 1945-89 | |
| Communist 1946-90 | |
| Communist 1946-92 | |
| Communist 1947-89 | |
| Communist 1948-90 | |
| Communist 1948-Present | |
| Communist 1949-89 | |
| Communist 1949-90 | |
| Communist 1949-Present | |
| | Communist/Marxist Control | Country |
| Communist 1959-Present | |
| Communist 1970-92 | |
| Communist 1974-90 | |
| Communist 1975-90 | |
| Communist 1975-90 | |
| Communist 1975-92 | |
| Communist 1975-Present | |
| Communist 1976-91 | |
| Communist 1976-Present | |
| Communist 1978-92 | |
| Communist 1979-81 | |
| Communist 1987-91 | |
| Communist 1921-44 (Became part of Soviet Union) | |
| Communist 1939-40 (Illegitimate puppet government) | |
| Communist 1947-49 (Illegitimate claim to power) | |
| Communist 1954-76 (Vietnam united in 1976) | |
| Communist 1979-83 (Claim to power disputed) | |
|