Weinmann is a German surname meaning "vine man" and may refer to:
- Ariel Weinmann, U.S. Navy Seaman Recruit guilty of espionage and desertion
- Artur Weinmann (1883–1942)
- Erwin Weinmann (1909–1948), doctor, SS-Oberführer
- Friedrich Weinmann (1885–1929), German cameraman
- Johann Anton Weinmann (1782–1858), German botanist
- Johann Simon Weinmann
- Johann Simon Weinmann, the Younger (German: Johann Simon Weinmann der Jüngere; 1583–1638), Mayor of Heilbronn
- Johann Wilhelm Weinmann (1683, Gardelegen - 1741), German apothecary and botanist
- Karl Weinmann (1873–1929), Catholic theologian and musicologist
- Kurt Weinmann (1922–2007), German chemist
- Manfred Weinmann (born 1934), Mayor of Heilbronn
- Rudolf Weinmann (1915–2004), German political activist
- Simon Weinmann
- Simon Weinmann, the Elder (German: Simon Weinmann der Ältere; 1534–1606), Mayor of Heilbronn
- Werner Weinmann (1935–1997), German politician (SPD)
- Wolfgang Weinmann, judo-player, book author
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