Sidney Slon (May 27, 1910, in Chicago - January 21, 1995) was an American radio and TV writer and actor. He contributed greatly to early radio and television as the head writer for the famous radio shows The Shadow and Dick Tracy; as an actor playing the doctor in "The Goldberg's," also a radio show; and as a producer of many hit TV series in the 1950s and '60s.

A relatively new radio station, WLW, had started up in Cincinnati, Ohio, a strategic location amid Eastern, Southern, and Midwestern states. This powerful 500,000-watt station was hiring actors for live radio dramas, an emerging market. With his Goodman Theater training, his ability to play multiple characters with different accents, and his sight-reading skills, Slon was hired right away. Several months into his employment, WLW introduced a popular new show, The Shadow. The producer asked Slon what he thought of it. He replied that the idea seemed okay for radio, but he didn't like the script he had seen. The producer challenged him to create a better one, which he did. The producer loved it, and Slon advanced from head writer to sole writer for this new venture, soon to become the nation's most popular radio show.