Marcus Zuerius van Boxhorn (August 28, 1612 - October 3, 1653) was a Dutch scholar. Born in Bergen op Zoom, he was professor at the University of Leiden. He discovered the similarity among Indo-European languages, and supposed the existence of a primitive common language which he called 'Scythian'. He included in his hypothesis Dutch, Greek, Latin, Persian, and German, later adding Slavic, Celtic and Baltic languages.