Gustav "Gustl" Müller (23 October 1903 – 20 September 1989) was a German Nordic combined and cross-country skier.
Müller was born in Bayrischzell.
At the age of 24 years, he participated at Nordic combined of the 1928 Winter Olympics, where he placed 21st in the final ranking.
He also participated at the FIS Nordic World Ski Championships 1933, and was member of the Bronze teams at the first and second edition of the legendary Trofeo Mezzalama race, in 1933 together with Willy Bogner and Matthias Wörndle, and in 1934 together with Franz Fischer and Matthias Wörndle.Further notable results:
1927:
1st, German Nordic combined championships, individual
1st, German cross-country skiing championships, relay, together with Viktor Schneider, Ernst Huber, Hans Bauer and Hans Theato
1929: 1st, German Nordic combined championships, individual
1930:
1st, German cross-country skiing championships, 50 km
1st, German cross-country skiing championships, relay, together with Willi Leiner, Ernst Krebs, Georg Hagn and Martin Neuner
1931:
1st, German Nordic combined championships, individual
1st, German cross-country skiing championships, relay, together with Willy Bogner, Ernst Krebs, Georg Hagn and Josef Ponn
1932: 1st, German cross-country skiing championships, relay, together with Willy Bogner, Ernst Krebs, Walter Motz and Hans Darchinger