Grosz or Grósz is a surname of several possible origins. "Grosz" is a Polish-language surname originally used by Poles and Polish Jews derived either from the nickname from Polish "grosz", a coin, 1/100 of Polish zloty or from Polish spelling of German Groß, meaning "large". Grósz is a Hungarian language spelling of "Groß".Dictionary of American Family Names p.91 Notable people with this surname include:

Amihai Grosz (born 1979), Israeli violist Barbara J. Grosz (born 1948), American artificial intelligence pioneer Dave Grosz (1938–2018), Canadian football player Dezső Grósz (1898–1987), Hungarian footballer Edith Grosz (1919–2011), American pianist and music educator based in Amsterdam Edward M. Grosz (born 1945), American Catholic prelate Elizabeth Grosz (born 1952), Australian feminist theorist George Grosz (1893–1959), German artist Gerald Grosz (born 1977), Austrian author, commentator and politician Gisella Grosz (1875–1942), Hungarian classical pianist István Grósz (1895–1944), Hungarian middle-distance runner Károly Grósz (1930–1996), Hungarian politician Marty Grosz (born 1930), German-born American jazz guitarist, banjoist, vocalist and composer Peter Grosz, American actor and television writer Stephen Grosz (born 1952), British author and psychoanalyst Terry Grosz (1941–2019), American game warden Wilhelm Grosz (1894–1939), Austrian composer, pianist and conductor

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