Meaning A boy's name of Norse origin, it means "Son of Illugi." Origin of Gunnlaug Norse , Scandinavian Popular Middle Names Pronunciation 🔊 Listen Gunnlaug Similar Names Gungir Ganger Geirleif Geirstein Gnup Grani Greyfell Grim Gudbrande Aesir Year by Year Popularity of Gunnlaug