| Honorific Prefix: | Saint |
| Gregory of Tatev Գրիգոր Տաթևացի | |
| Birth Date: | 1346 |
| Birth Place: | Tmkaberd (now in Georgia) |
| Death Date: | 1409 or 1410 |
| Venerated In: | Armenian Apostolic Church |
Gregory of Tatev, or Grigor Tatevatsi (Armenian: Գրիգոր Տաթևացի) (1346 - 1409 or 1410) was an Armenian philosopher, theologian and a saint in the Armenian Apostolic Church.
Gregory was born in Tmkaberd in Georgia or Vayots Dzor in Siunik. He was educated at the monasteries of Tatev and Metzop.[1]
Gregory was a faithful Miaphysite, at a time when the Armenian church was building relations with the Dyophysite Roman Catholic Church. He wrote against uniting the Armenian church with Rome.[2]
In 1397, during perpetual invasions by the Timurids, he completed the Book of Questions, a basic and comprehensive theological outline.
A monument to Tatevatsi was unveiled on October 16, 2010 in Goris, Armenia.[3] [4]