Meaning A boy's name of Norse origin, it means "A mythical servant of Thor." Origin of Thialfi Norse , Scandinavian +-100%Zoom level changed to 1 Popular Middle Names Pronunciation 🔊 Listen Thialfi Similar Names Thjalfi Rungnir Thurston ThDrbjorn Thorbert Thorbiartl Thorleif Thorolf Thorstein Torald Year by Year Popularity of Thialfi