Meaning A vairant of the name Seamus, derived from the English name James, meaning 'supplanter'. Origin of Shamus Hebrew +-100%Zoom level changed to 1 Popular Middle Names Patrick Pronunciation 🔊 Listen Shamus SHAY-mus Similar Names Seamus Jamie James Tiago Jimmy Jim Jimi Dymtrus Coby Burt Year by Year Popularity of Shamus