Alexander Megas Komnenos, also recorded as Skantarios, was co-emperor of the Empire of Trebizond alongside his elder brother John IV Megas Komnenos c. 1451–1459. Alexander was the second son of the Trapezuntine emperor Alexios IV Megas Komnenos. John was exiled after a failed rebellion against their father in c. 1426, and Alexios made Alexander the designated heir. John returned to Trebizond in early 1429 and seized the throne, killing Alexios and forcing Alexander into exile.
- Position held
- despot, emperor of Trebizond
- Citizenship
- Empire of Trebizond, Byzantine Empire
- Born
- 1405
- Died
- 1459
