Meaning A boy's name of Gaelic origin, it means "Christ Bearer." Origin of Criostoir Gaelic , Irish +-100%Zoom level changed to 1 Popular Middle Names Pronunciation 🔊 Listen Criostoir Similar Names Christopher Crisdean Christobel Christoph Christoffel Christophoros Cristophe Cristofer Christofer Kitt Year by Year Popularity of Criostoir