Wolfgang Windgassen (June 26, 1914 – September 8, 1974) was a tenor internationally known for his performances in Wagner operas.Born in Annemasse, France, he was the son (and pupil) of a well known German Heldentenor, Fritz Windgassen (who was also the teacher of Gottlob Frick). His mother was the German coloratura soprano Vali von der Osten, sister of the much more famous soprano Eva von der Osten, who created the part of Octavian in Richard Strauss' Der Rosenkavalier. Both Windgassen's parents were longtime mainstays of the Staatsoper Stuttgart.