Sahak I (Armenian: Սահակ Ա. Մանազկերտցի) was a catholicos of the Armenian Apostolic Church. He succeeded Saint Nerses I the Great and reigned from 373 to 377 AD and first of three catholicoi from the Albaniosid Dynasty

Preceded by Catholicos of the Holy See of St. Echmiadzin and All Armenians
373–377
Succeeded by