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Tsiolkovsky (Russian: Циолко́вский) may refer to:
- Konstantin Tsiolkovsky (1857–1935), Russian and Soviet rocket scientist
- Tsiolkovsky, Amur Oblast (formerly Uglegorsk), Russian town named for Tsiolkovsky
- Tsiolkovsky State Museum of the History of Cosmonautics in Kaluga; named for Tsiolkovsky
- Tsiolkovsky rocket equation, named for Tsiolkovsky
- Tsiolkovsky tower, spacelaunch concept developed by Tsiolkovsky
- Tsiolkovsky mission, Soviet space program named for Tsiolkovsky
- Tsiolkovskiy Island, Antarctic island named for Tsiolkovsky
- Tsiolkovskiy (crater), Moon crater named for Tsiolkovsky
- 1590 Tsiolkovskaja, asteroid named for Tsiolkovsky