Meaning A variant spelling of the popular name Neil, meaning 'champion', 'cloud' or 'passionate'. Origin of Nial Celtic , Irish Popular Middle Names James, Shaun Pronunciation 🔊 Listen Nial NAYahL Similar Names Alfie-Joe Steward Nemausus Carmichail Cayleb Aymaan Kaylub Benjaman Nikolaos Ganix Year by Year Popularity of Nial