Meaning Marwin is a boys name of Celtic origin, it means 'friend of the Sea' and 'marvelous'. It is a form of Marvin. Origin of Marwin Celtic , Irish Popular Middle Names Isaac Pronunciation 🔊 Listen Marwin Similar Names Irving Erwinek Atrus Arturs Artie Artturi Morfran Randon Ata’ Allah Ugoulo Year by Year Popularity of Marwin