Columba’s name day is June 9, the feast of Columba of Iona.
Churches that follow the Old (Julian) Calendar keep the same feast on June 22 of the civil calendar. See everything commemorated on June 9.
The saint behind the name
Columba of Iona
June 9, Venerable, Κολούμβας ο εν Ιόνα
Saint Columba was born in Ireland of a noble family in 521 and became a monk and founder of monasteries. In 563 he left Ireland with twelve companions and settled on the island of Iona, from which he preached to the Picts of Scotland and established a monastic community that shaped the Church of the British Isles.
Also celebrating on June 9
These names share the feast, many of them other forms of the same name:
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.