Antheunis is a Dutch surname. Notable people with this name include the following:
Etienne Antheunis (born 1947), Belgian cyclist Franciscus Henricus Antheunis, known as Franciscus Henri (born 1947), Dutch-born Australian entertainer Gentil Theodoor Antheunis (1840–1907), Belgian poet Yorique Antheunis (born 1991), Belgian footballer
See also
Filip Anthuenis Theunis