Gustav Müller

Gustav Müller may refer to:
 * Gustav Müller (astronomer) (1851–1925), German astronomer
 * Gustav Müller (politician) (1860–1921), Swiss politician
 * Gustav Müller (serial killer) (1865–?), German bigamist, murderer and serial killer
 * Gustav Wilhelm Müller (1857–1940), German zoologist
 * Gustl Müller (1903–1989), German Nordic combined and cross-country skier