| Michael Megas Komnenos | |
|---|---|
| Emperor and Autocrat of all the East and Perateia | |
 Coin depicting Michael Megas Komnenos | |
| Emperor of Trebizond | |
| Reign | 3 May 1344 – 13 December 1349 |
| Predecessor | John III |
| Successor | Alexios III |
| Died | After 1355 Constantinople (modern-day Istanbul, Turkey) |
| Spouse | Acropolitissa |
| Issue | John III Megas Komnenos |
| Dynasty | Komnenos |
| Father | John II Megas Komnenos |
| Mother | Eudokia Palaiologina |
Michael Megas Komnenos (Greek: Μιχαήλ Μέγας Κομνηνός, Mikhaēl Megas Komnēnos; c. 1288 – after 1355) was Emperor of Trebizond from 3 May 1344 to 13 December 1349. He was a younger son of Emperor John II of Trebizond and Eudokia Palaiologina.