Huysmans or Huijsmans is a Dutch occupational surname. A "huisman" or "huijsman" is an archaic term for a farmer. Notable people with the surname include:
Camille Huysmans (1871–1968), Belgian politician
Constant Huysmans (1928–2016), Belgian footballer
Constant Cornelis Huijsmans (1810–1886), Dutch painter
Cornelis Huysmans (1648–1727), Flemish painter, brother of Jan Baptist Huysmans
Gerardus Huysmans (1902–1948), Dutch Minister for Finance (1945) and Economy (1946–1948) Jacob Huysmans (c. 1633–1696), Flemish portrait painter Jan Baptist Huysmans (1654–1716), a Flemish painter, brother of Cornelis Huysmans Jan-Baptist Huysmans (1826–1906), Belgian Orientalist painter and travel writer Joris-Karl Huysmans (1848–1907), French novelist Jos Huysmans (1941–2012), Belgian cyclist
Huijsman/Huysman: Harald Huysman (born 1959), Norwegian race car driver Jérémy Huysman (born 1988), French footballer Nicolas Huysman (born 1968), French footballer