Marvin \m(a)-rvin, mar-vin\ as a boy's name is pronounced MAR-ven. It is of Welsh origin, and the meaning of Marvin is "sea friend". Variant of Mervin. Some derive this name from Myrddin, the Welsh name of King Arthur's wizardly tutor (known in English as Merlin). That name means "sea fortress". Also possibly a blend of Marcel and Edwin. Actor Lee Marvin; songwriter Marvin Hamlisch; singer Marvin Gaye; football player Marvin Harrison.