Felix James McCool (June 14, 1912 – December 27, 1972) was a United States Marine Corps chief warrant officer 3. He is one of two Marines to be captured as a prisoner of war (POW) twice, the first during World War II, and the second during the Korean War. Spending more than six years total in captivity, McCool held the record as the longest-held Marine POW until surpassed by several other Marines during the Vietnam War.