Hennesey is an American military comedy-drama television series that aired on CBS from 1959 to 1962, starring Jackie Cooper and Abby Dalton.

[1] Prior to being cast as Opie Taylor on The Andy Griffith Show, child actor Ron Howard played "Walker", a little boy temporarily left in Hennesey's care in the 1959 episode "The Baby Sitter".

Other guest stars: The series theme tune by Sonny Burke was a jazzy hornpipe played by tuba and piccolo.

Hennesey was also innovative for being the first series to employ what has since become a standard device in television: beginning the dialog and action of each episode during opening credits.

Cooper starred in, produced, and directed the series, drawing upon his real-life experience as a World War II Navy veteran and his continuing service for many years as an officer in the United States Naval Reserve.