John IV Megas Komnenos | |
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Emperor and autocrat of all the east and Perateia | |
![]() Coin of John IV of Trebizond | |
Emperor of Trebizond | |
Reign | 26 April 1429 – April 1460 |
Predecessor | Alexios IV |
Successor | Alexios V |
Co-emperor | Alexander (c. 1451 – c. 1459) |
Born | Before 1404 |
Died | April 1460 |
Spouse | Bagrationi |
Issue | Theodora Megale Komnene |
Dynasty | Komnenos |
Father | Alexios IV Megas Komnenos |
Mother | Theodora Kantakouzene |
John IV Megas Komnenos (Greek: Ιωάννης Μέγας Κομνηνός, Iōannēs Megas Komnēnos) (died April 1460) was Emperor of Trebizond from 1429 until his death. He was a son of Emperor Alexios IV of Trebizond and Theodora Kantakouzene.