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| Konstantin Mikhailovich | |
|---|---|
 The marriage of Konstantin, miniature from the Illustrated Chronicle of Ivan the Terrible (16th century) | |
| Prince of Tver | |
| Reign | 1327–1338 |
| Predecessor | Aleksandr |
| Successor | Aleksandr |
| Reign | 1339–1346 |
| Predecessor | Aleksandr |
| Successor | Vsevolod |
| Born | 1306 |
| Died | 1346 |
| House | Rurik |
| Father | Mikhail of Tver |
| Mother | Anna of Kashin |
Konstantin Mikhailovich (Russian: Константин Михайлович; 1306–1346) was Prince of Tver from 1327 to 1338 and again from 1339 until his death in 1346. He was the third son of Mikhail of Tver and the founder of the branch of Rurikid princes later called Dorogobuzh.
He succeeded his brother Aleksandr as prince after a failed popular uprising against the Tatars. During his reign, Konstantin was a loyal servant of Ivan I of Moscow, the uncle of his wife Sophia.