| Rufinus of Byzantium | |
| Patriarch Of: | Bishop of Byzantium |
| Enthroned: | 284 |
| Ended: | 293 |
| Predecessor: | Dometius of Byzantium |
| Successor: | Probus of Byzantium |
| Religion: | Early Christianity |
Rufinus I (Greek: Ρουφῖνος; died 293) was Bishop of Byzantium from 284 to 293.[1]