Most people named Grigorios keep their name day on January 25, the feast of Gregory the Theologian. The Orthodox calendar has 3 other feasts for the name.
Every feast on which Grigorios is celebrated
| New Calendar | Feast | Old Calendar (civil date) |
|---|---|---|
| January 10 | Gregory of Nyssa | January 23 |
| January 25 | Gregory the Theologian | February 7 |
| 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.

Gregory of Armenia
September 30, Hierarch, Γρηγόριος Αρμενίας
St. Gregory, the Illuminator of Armenia, brought the Gospel to the Armenian people at the turn of the fourth century. For his confession of Christ he endured long imprisonment in a deep pit, yet through his patience and prayer King Tiridates was converted, and Gregory, consecrated bishop, baptized the king and his people, making Armenia one of the first Christian nations.
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:
Grigoris, Gregory, 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.