Günther Treptow (22 October 1907 in Berlin – 28 March 1981 in Berlin) was a German operatic tenor, best known for Wagner roles.
Treptow began his vocal studies in Berlin as a baritone under the Italian bass, Giovanni Scarneo. Treptow was since 1926 a member of the SA and Nazi Party (membership number 38 579) until the discovery in 1934 of his mother's Jewish heritage. He was banned from performing until being granted special permission to do so from Joseph Goebbels on 6 June 1935. He made his stage debut in Berlin, as the Italian singer in Der Rosenkavalier, in 1936. He sang at the Vienna Volksoper in 1938, as Florestan in Fidelio. He appeared at the Sopot Festival in 1939, in the title role of Tannhäuser. He made his debut at the Munich State Opera in 1940, the Vienna State Opera in 1947, and the Bayreuth Festival in 1951.