Meaning Reilynn is a girls name of Celtic origin, it means a courageous, valliant woman. Origin of Reilynn Celtic , Irish Popular Middle Names Alexis Pronunciation 🔊 Listen Reilynn rei-lynn Similar Names Bellicent Aakifah Sadbh Shailey Aife Sadb Kuvira Ahyas Arte Arlene Year by Year Popularity of Reilynn