Gustav Alexander Max Uth was a German painter of landscapes and art teacher.

Uth was the son of a manufacturer and enrolled at the Academy of Art in Berlin under Eugen Bracht. He opened his own atelier for women painters in 1897 in Berlin; among his students were Gertrud Berger (1870–1949), Laura Schaberg (1860 or 1866–1935), Sophie Wencke-Meinken (1874–1963) and Emmy Gotzmann (1881-1950).

Paintings by him were among those exhibited in the AEG electricity pavilion at the Paris Exposition Universelle in 1900 and in the German Pavilion at the St. Louis World's Fair in 1904. He was one of the founding members of the Berlin Secession in 1899, and one of the sixteen artists to leave it in 1902.