Republic of Crimea may refer to
- Republic of Crimea, a Russian subject
- Republic of Crimea, a short-lived country that declared its independence from Ukraine in 2014
- Autonomous Republic of Crimea, the republic claimed by Ukraine prior to March 2014
- Crimean Autonomous Soviet Socialist Republic, an autonomous Soviet Socialist republic 1921 to 1992
- Crimean People's Republic, December 1917 to January 1918