Stefan Schnabel was an actor best remembered for having portrayed Dr. Stephen Jackson for sixteen years on the CBS Television soap opera The Guiding Light, on which he appeared from 1965 to 1981. In addition to his television work, Schnabel appeared frequently on the stage, including playing the role of Metellus Cimber in Orson Welles's "Blackshirt" stage version of Shakespeare's Julius Caesar, set in Fascist Italy, in 1937.
Schnabel, in his role as the conspirator Metellus Cimber, was played by Rhodri Orders in the 2008 movie Me and Orson Welles.
Schnabel was also in over sixty films, including The Iron Curtain, Houdini, with his last role in the 1990 film Green Card. He also played the Soviet First Secretary in the 1982 Clint Eastwood suspense thriller Firefox. He was the son of famed classical pianist Artur Schnabel and contralto Therese Behr.