Ralph Byrd (1909-1952) was an American actor. He was best known for his portrayal of the comic strip character Dick Tracy in a series of film serials, theatrically-released movies, and on television.

Ralph Byrd appears in experiments #203 Jungle Goddess (opposite George Reeves, TV's Superman) and #520 Radar Secret Service (opposite Sid Melton, "Alf" on Green Acres).