Harry Walden , born Ludwig Patrick Harry Schreier (1875-1921), was a German theater actor with a short film career in Vienna in the late 1910s.

At the end of the 1900s he settled in Berlin, where he also performed between 1908 and 1910 under Max Reinhardt's directorship. He played under his direction, especially in tragedies by Shakespeare, Goethe and Schiller : Edgar in King Lear, the title hero in Clavigo, Ferdinand in Kabale und Liebe and Don Carlos.