USS Princeton was one of 24 Essex-class aircraft carriers built during and shortly after World War II for the United States Navy. The ship was the fifth US Navy ship to bear the name, and was named for the Revolutionary War Battle of Princeton. Princeton was commissioned in November 1945, too late to serve in World War II, but saw extensive service in the Korean War, in which she earned eight battle stars, and the Vietnam War. She was reclassified in the early 1950s as an attack carrier (CVA), then as an Antisubmarine Aircraft Carrier (CVS), and finally as an amphibious assault ship (LPH), carrying helicopters and marines. One of her last missions was to serve as the prime recovery ship for the Apollo 10 space mission.

The Essex class is a retired class of aircraft carriers of the United States Navy. The 20th century's most numerous class of capital ship, the class consisted of 24 vessels, which came in "short-hull" and "long-hull" versions. Thirty-two ships were ordered, but as World War II wound down, six were canceled before construction, and two were canceled after construction had begun. Fourteen saw combat during World War II. None were lost to enemy action, though several sustained crippling damage due to kamikaze attacks. Essex-class carriers were the backbone of the U.S. Navy from mid-1943 and, with the three Midway-class carriers added just after the war, continued to be the heart of U.S. naval strength until supercarriers joined the fleet in the 1950s, 1960s and 1970s. Several of the carriers were rebuilt to handle heavier and faster aircraft of the early jet age, and some served until well after the Vietnam War. Of the 24 ships in the class, four of the carriers: Yorktown, Hornet, Lexington, and Intrepid, have been preserved as museum ships.