Hans Fischer (1881–1945) was a German organic chemist.
Hans Fischer may also refer to:
Hans Fischer (painter) (1909–1958), Swiss painter Hans Fischer (cyclist) (born 1961), Brazilian cyclist Hans Fischer, CEO of Tata Steel Europe Hans Fischerkoesen (1896–1973), also known Hans Fischer, German commercial animator
See also Hans Vischer Hank Fischer (born 1940), pitcher in Major League Baseball Hans-Werner Fischer-Elfert (born 1954), German professor of Egyptology