Wenceslaus \we-nces-laus, wen-ce-slaus\ as a boy's name is of Slavic origin, and the meaning of Wenceslaus is "greater glory". From "ventie slav". Also possibly refers to the Wendlas, or Vandals, a Slavic people who lived in northern Europe in the Middle Ages. King Wenceslas, patron saint of the Czech Republic, was a 10th-century monarch of Bohemia and a martyr for faith. The name was made famous by the famous Christmas carol written in the 19th century. Venceslao is the Spanish form.

Wenceslaus has 8 variant forms: Venceslao, Vlacheslav, Vyachaslav, Vyacheslav, Wenceslas, Wenczeslaw, Wenzel and Wiencyslaw.

Baby names that sound like Wenceslaus are Jennesis and Jenesis.