Olan Soule (February 28, 1909 – February 1, 1994) was an American actor, who had professional credits in nearly 7,000 radio shows and commercials, appearances in 200 television series and television films, and in over 60 films. After leaving the tent show, Soule appeared on stage in Chicago for seven years before moving to radio in 1933, including a stint on Chandu the Magician (1935–36). On radio he performed for eleven years in the daytime soap opera Bachelor's Children.

Beginning in 1943, he played lead male characters on radio's famed The First Nighter Program for nine years. Listeners of First Nighter who met Soule in person were often surprised, since his slight 135-pound frame did not seem to match the voices he gave to his characters. From 1941 on, Soule had the role of L. William Kelly, SS-11, the second in command of the Secret Squadron on the Captain Midnight radio adventure serial.