Meaning Commonly used in Irish and a variation of Rose. It means 'horse', 'fame' and 'rose'. Origin of Roisin Celtic , Irish Popular Middle Names Sumalee, Una Pronunciation 🔊 Listen Roisin ROI-sin Similar Names Roisin Rosy Ruby Rose Rosina Eva Rose Evelyn-Rose Bethany-Rose Lilly-Rose Mia-Rose Molly Rose Year by Year Popularity of Roisin