The 6th Ranger Battalion was a United States Army Ranger Battalion which saw action in the Pacific during World War II. The battalion is best known for its role in the Raid at Cabanatuan in the Philippines in January 1945.

The United States Army Rangers are U.S. Army personnel who have served in any unit which has held the official designation of "Ranger". The term is commonly used to include graduates of the Ranger School, even if they have never served in a "Ranger" unit; the vast majority of Ranger school graduates never serve in Ranger units and are considered "Ranger qualified".