Meaning Kelvyn is a Celtic name for a boy, it means 'man from the narrow river'. Origin of Kelvyn Celtic , Irish +-100%Zoom level changed to 1 Popular Middle Names David Pronunciation 🔊 Listen Kelvyn Similar Names Kelwin Kelwyn Adie Kelvan Kelven Caolabhuinn Kile Ky Kylan Kyle Year by Year Popularity of Kelvyn