Most people named Gregory keep their name day on January 25, the feast of Gregory the Theologian. The Orthodox calendar has 4 other feasts for the name.
Every feast on which Gregory is celebrated
| New Calendar | Feast | Old Calendar (civil date) |
|---|---|---|
| January 10 | Gregory of Nyssa | January 23 |
| January 25 | Gregory the Theologian | February 7 |
| January 30 | Three Holy Hierarchs | February 12 |
| September 30 | Gregory of Armenia | October 13 |
| November 17 | Gregory the Wonderworker | November 30 |
The saints behind the name

Gregory the Theologian
January 25, Great Feast, Γρηγόριος ο Θεολόγος
St. Gregory the Theologian was born in Cappadocia in the fourth century and studied in Athens with his close friend St. Basil the Great. A man of deep prayer and unmatched eloquence, he was called to Constantinople when the city was dominated by Arianism, and through his celebrated theological orations restored the Orthodox faith in the Holy Trinity. He briefly served as Archbishop of Constantinople before withdrawing to a life of quiet and asceticism.

Gregory of Nyssa
January 10, Hierarch, Γρηγόριος Νύσσης
St. Gregory of Nyssa was the younger brother of St. Basil the Great, born in Cappadocia in the fourth century to a family rich in saints. As Bishop of Nyssa he defended the Nicene faith against Arianism, endured exile for the truth, and took part in the Second Ecumenical Council in Constantinople in 381.

Three Holy Hierarchs
January 30, Great Feast, Τρεις Ιεράρχαι
The feast of the Three Holy Hierarchs honors together Sts. Basil the Great, Gregory the Theologian, and John Chrysostom, the great fathers and ecumenical teachers of the Church. According to tradition, the common feast was established in the eleventh century after disputes arose in Constantinople over which of the three was greatest; the hierarchs made known in a vision that they are one before God, and a shared commemoration was appointed.
The other feasts are listed in the table above, each with a link to the saint’s life.
Also celebrating on January 25
These names share the feast, many of them other forms of the same name:
Grigorios, Grigoris, Greg, Grigoria
What to say on a name day
The Greek wish is Χρόνια Πολλά (Chronia Polla), “many years.” A call or a short message on the day is what people remember. See name day wishes you can send and what a name day is.