Gustav von Seyffertitz (4 August 1862 – 25 December 1943) was a German film actor and director.

He emigrated to the United States in 1896, after being asked by the Austrian-American theatre director Heinrich Conried.

In his films, the dignified-looking Seyffertitz often played the "very embodiment of the Hideous Hun - America's notion of the merciless, atrocity-happy German military officer".

[3] One of his most successful film roles was Professor Moriarty in 1922's Sherlock Holmes with John Barrymore.

He also played the antagonist to Mary Pickford in Sparrows (1926) and appeared as Ramon Novarro's uncle, the king of a small German state, in Ernst Lubitsch's The Student Prince in Old Heidelberg (1927).