Olcán (fl. 5th century) is the name of an early Irish saint of the Dál Riata, disciple of St Patrick and founder of the monastery in Armoy in northeast County Antrim, Northern Ireland.
Olcan is a Turkish and Irish given name for males.
People named Olcan include:
- Olcan Adın, Turkish footballer
- Olcan McFetridge, Irish retired sportsperson