Ernst Pittschau (5 October 1883 – 2 June 1951) was a German stage and film actor.

Pittschau personified elegant lovers and was a partner of Hanni Weisse and Henny Porten, among others.

In the 1940s, he lived in poverty and had to rely on the support of the Goebbels-supported foundation for people who worked in the arts, "Künstlerdank."

After World War II, the Italian director Roberto Rossellini brought the almost forgotten actor in front of the camera again.

His half-brother was the stage and film actor Werner Pittschau (1902-1928) who died in a car crash.