VP-33 was a Patrol Squadron of the U.S. Navy. The squadron was established as Patrol Squadron 12-F (VP-12F) on 1 November 1935, redesignated Patrol Squadron 12 (VP-12) on 1 October 1937, redesignated Patrol Squadron 51 (VP-51) on 1 July 1939, redesignated Patrol Squadron 71 (VP-71) on 1 July 1941, redesignated Patrol Bombing Squadron 71 (VPB-71) on 1 October 1944, redesignated Patrol Squadron 71 (VP-71) on 15 May 1946, redesignated Amphibian Patrol Squadron 3 (VP-AM-3) on 15 November 1946, redesignated Patrol Squadron 33 (VP-33) on 1 September 1948 and disestablished on 15 December 1949. It was the third squadron to be designated VP-33; the first had been redesignatd from VP-5 on 1 July 1939 and was in turn redesignated as VP-32 on 1 October 1941. The second VP-33 was redesignated VPB-33 on 1 October 1944.

They earned the nickname Black Cats after  the events of 24 November 1944: where VPB-71 deployed to Manus Island, reporting to Commander, Air Seventh Fleet for duty on 13 November. A detachment of two aircraft was loaned to the 2d Emergency Rescue Squadron of the 13th Army Air Force. On the 24th, VPB-71 commenced Black Cat operations in the vicinity of Morotai. Black Cat operations were flown by U.S. Navy Catalina squadrons against Japanese shipping and shore installations at night. Although originally a tactic designed to afford some measure of protection for the highly vulnerable, slow moving seaplanes, Black Cat operations proved so successful that several squadrons were assigned the role. Flat black painted surfaces and the use of radar made the outdated aircraft into a formidable night attacker.