Meaning A boy's name of Gaelic origin, it means "Warlike." Origin of Martainn Gaelic , Irish +-100%Zoom level changed to 1 Popular Middle Names Pronunciation 🔊 Listen Martainn Similar Names Mungan Peadar Bealantin Gabhan Gearald Gille Raibeart Stiabhan Martel Marijan Year by Year Popularity of Martainn