Posner is a surname of German origin, meaning "a person from the city of Posen", now Poznań in Poland. It is a fairly common surname among Ashkenazi Jews. Variants of the name are Posener and Pozner. Notable people with the surname include:
Aaron Posner, American playwright and stage director
Barry Posner (disambiguation), several people
David Posner, fictional character in the Alan Bennett play The History Boys
Eric Posner (born 1965), American jurist and academic
Gary H. Posner (born c. 1940s), American chemist
Geoff Posner (born 1949), British producer of television and radio comedy
Gerald Posner (born 1954), American journalist
Michael Posner (businessman), Aruban businessman and casino owner
Michael Posner (economist) (1931–2006), British economist
Michael Posner (lawyer) (born 1950), American lawyer and activist
Michael Posner (psychologist) (born 1936), American psychologist
Mike Posner (born 1988), American singer, songwriter and producer
Richard Posner (born 1939), prominent American judge and jurist
Ruth Posner (born 1933), Polish-born actress
Sarah Posner, American journalist
Victor Posner (1918–2002), American entrepreneur
Vladimir Posner (born 1934), French-American-Russian journalist
