Meaning Ruy is a boys name of Celtic origin, it means a ruddy, red-haired king. Origin of Ruy Celtic , Irish +-100%Zoom level changed to 1 Popular Middle Names Pronunciation 🔊 Listen Ruy Similar Names Rohan Ruairi Rowen Flynn Russ Roary Rowan Roy Bhoomindra Ruairidh Year by Year Popularity of Ruy