Greg can be celebrated on 2 feasts in the Orthodox calendar. People keep the feast of the saint they were named for, or the one their family has always kept.
Every feast on which Greg is celebrated
| New Calendar | Feast | Old Calendar (civil date) |
|---|---|---|
| January 25 | Gregory the Theologian | February 7 |
| 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 the Wonderworker
November 17, Hierarch, Γρηγόριος Θαυματουργός
St. Gregory the Wonderworker was Bishop of Neocaesarea in Pontus in the third century. A student of philosophy who was won to Christ, he received the episcopate of a city with only a handful of Christians; through his preaching and the many miracles God worked through him, it is said that at his death only a handful of pagans remained.
Also celebrating with Greg
These names share the feast, many of them other forms of the same name:
Grigorios, Grigoris, Gregory, 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.