Maurice Cass (October 12, 1884 – June 8, 1954) was a character actor on stage and in films and television shows.

Born in Vilna, Russian Empire (modern day Vilnius, Lithuania) he moved to America at six years of age.

[2] His slight build, frizzy hair and pince-nez glasses cast him as the "absent minded professor" or eccentric scientist type in many of his films, such as the character who discovers the element kryptonite in Adventures of Superman.

He is best remembered for his role as Professor Newton in the 1954 TV science fiction show Rocky Jones, Space Ranger, which later was produced as a film Manhunt in Space.

Cass's Broadway credits included The Sky's the Limit (1934), Broadway Boy (1932), Wild Waves (1932), Wonder Boy (1931), Overture (1930), The Violet and One, Two, Three (1930), The Novice and the Duke (1929), The Broken Chain (1929), and Faust (1928).