Meaning A boy's name of Swedish origin, it means "pure; unblemished." Origin of Nels Swedish , Scandinavian +-100%Zoom level changed to 1 Popular Middle Names Pronunciation 🔊 Listen Nels Similar Names Niklas Kalle Kjell Kristofer Patrik Edvard Eugen Jonam Maklolm Roald Year by Year Popularity of Nels