Eva Maria Meineke Siegfried Breuer (24 June 1906 – 1 February 1954) was an Austrian stage and film actor and occasional film director and screenwriter.

Born in Vienna, Siegried was the son of Hans Breuer (1868 or 1870–1929), who was an opera singer and actor from Cologne.

Performing was in the blood and he studied at the Academy of Music and Performing Arts in Vienna, some time in the early 1920s and made his stage debut at the Volkstheater, Vienna in 1924.

In 1950 he directed, wrote and starred in the film Der Schuß durchs Fenster in which he worked with Curd Jürgens.

A heavy smoker, Breuer was married six times and died in 1954 in Weende, Göttingen at the age of 47.