Colm \c(o)-lm\ as a boy's name is pronounced kolm. It is of Irish and Gaelic origin. Short form of Latin Columba (see Calum) or Columban. Used in reference to Saint Columba (sixth century) of Ireland, who founded the monastery of Iona. Actor from "Star Trek: Deep Space Nine" Colm Meaney; actor Colm Wilkinson.
Colm has 7 variant forms: Callum, Collumbano, Colombain, Colum, Columbano, Columbanus and Columcille.