Ensign O'Toole is a military comedy that aired on NBC from September 23, 1962, to May 5, 1963, with 31-year-old Dean Jones in the title role of a nonchalant United States Navy ensign during the early 1960s. Jones, born in 1931 in Alabama and a Navy veteran of the Korean War, played an officer aboard the fictional U.S. Navy destroyer USS Appleby, which roamed the Pacific Ocean.

• Dean Jones
• Jack Mullaney
• Harvey Lembeck
• Jay C. Flippen
• Jack Albertson