David Healy (May 15, 1929 – October 25, 1995) was an American actor and singer who appeared in British and American television shows. Healy was born in New York City. His television credits include voices for the Supermarionation series Captain Scarlet and the Mysterons, Joe 90 and The Secret Service, as well as parts in UFO, The Troubleshooters, Randall and Hopkirk (Deceased), Strange Report, Dickens of London, Space Precinct, and Dallas. He also starred as Dr. Watson opposite Ian Richardson's Sherlock Holmes in the 1983 TV film of The Sign of Four.