Rittner is a surname. Notable people with the surname include:
Barbara Rittner (born 1973), German tennis player Don Rittner, American historian, archeologist, environmental activist, educator and author Günter Rittner (1927–2020), German painter and illustrator Horst Rittner (1930–2021), German correspondence chess grandmaster Rudolf Rittner (1869–1943), German actor Tadeusz Rittner (1873–1921), Polish dramatist, prose writer and literary critic British Army Major T. H. Rittner, who was in charge of the German nuclear scientists interned at Farm Hall.
See also Rittner Horn, Mountain in South Tyrol, Italy
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