Posener is a surname of German origin, a demonym for a person from the Polish city Poznań (German: Posen). Notable people with the surname include:
Alan Posener (born 1949), British-German journalist Edith Head born Edith Claire Posener (1897–1981), American costume designer Jill Posener (born 1953), British photographer and playwright Joachim Posener (born 1964), Swedish financier and author Julius Posener (1904–1996), German architectural historian (born 1987), British actress; see Ninjak Paule Posener-Kriéger (1925–1996), French Egyptologist Zara Posener (born 1984), British actress
See also Posner Posen