Wilhelm Mayer may refer to:
(1886–1950), German General in the Luftwaffe
(1874–1923), German politician (Center, BVP) Wilhelm Mayer (composer) (1831–1898) Wilhelm Mayer (fighter pilot) (1917–1945), German World War II Luftwaffe ace Wilhelm Mayer-Gross (1889–1961), German-British psychiatrist and professor