Meaning & Origin
a male given name from Proto-Germanic, equivalent to English William
Willem is a boy's baby name of Dutch and Flemish origin, the Dutch form of William, meaning 'will-helmet' — from the Germanic elements wil (will, desire) and helm (helmet, protection). It has been borne by Dutch kings and was the name of William I of the Netherlands.
Willem has a sophisticated European flair that sets it apart from the ubiquitous William. Actor Willem Dafoe has given the name a distinctive, artistic identity in American culture. For parents who love the meaning and heritage of William but want something with an international character, Willem is an inspired alternative.