Grossinger also as Größinger, Grössinger is a surname. Notable persons with the surname include:
Carolin Größinger (born 1997), Austrian footballer Christa Grössinger (1942–2008), German art historian Fred Grossinger (1936–1995), American actor Harvey Grossinger, American writer Jennie Grossinger (1892–1972), American hotelier Johann Baptist Grossinger (1728–1803), Jesuit priest and naturalist Markus Grössinger (born 1989), Austrian footballer Richard Grossinger (born 1944), American writer