Dennis Troy (January 29, 1943 - July 2016) was an American actor who appeared in various bit roles he played on the M*A*S*H TV series from seasons 2-11. He was seen as an ambulance driver, an U.S. Army MP, a sick caregiver, a sentry guard, or an MP. Dennis was the brother of Gary Troy and the son of late actor Sid Troy, who also appeared in several small roles in films in the 1940s through the 1960s. Dennis's brother, Gary, produced and directed several films. Dennis Troy died in 2016 at the age of 73, announced in a Reddit comment by his grandson Johnathan Troy in 2025.
He appeared in two episodes of Hogan's Heroes; The Gold Rush as a Stunt Double, and in Will the Real Colonel Klink Please Stand Up Against the Wall?, as an uncredited Guard.