Heijnen is a Dutch patronymic surname. Heijn is a regional short form of the given name Hendrik. In Belgium the name is more often spelled Heynen. People with this surname include:
Harry Heijnen (1940–2015), Dutch football winger
(born 1965), Belgian actress
Pierre Heijnen (born 1953), Dutch Labour Party politician
Pieter Heijnen (born 1979), Dutch DJ known as "DJ Thera" Sibyl Heijnen (born 1961), Dutch visual artist Tonnie Heijnen (born 1967), Dutch table tennis player Kevin Heijnen (born 2001), Dutch politician, filmmaker, actor, electrical engineer and a professional crypto trader Heijne Bas Heijne (born 1960), Dutch writer and translator Heynen Bryan Heynen (born 1997), Belgian football midfielder Hilde Heynen (born 1959), Belgian architectural theoretician Julia Heynen, American stage actress Louise Heynen (1862–1932), German actress and theater director known as Louise Dumont Vital Heynen (born 1969), Belgian volleyball player and coach