Louis Quinn was an American television and film actor, best known for his role as Roscoe, the comic relief racetrack tout, from 1958 to 1963 in the ABC/Warner Bros. detective television series, 77 Sunset Strip.

77 Sunset Strip is an American television private detective drama series created by Roy Huggins and starring Efrem Zimbalist Jr., Roger Smith, Richard Long and Edd Byrnes. Each episode was one hour long when aired with commercials. The show ran from 1958 to 1964. The character of detective Stuart Bailey was first used by writer Huggins in his 1946 novel The Double Take, later adapted into the 1948 film I Love Trouble.