| Patrol Squadron 21 | |
|---|---|
 VP-7F P2Y-3 in 1936 | |
| Active | 23 July 1929 – 18 April 1942 |
| Country | United States of America |
| Branch |  United States Navy |
| Type | squadron |
| Role | Maritime patrol |
| Engagements | World War II |
| Aircraft flown | |
| Patrol | NB-1 PM-1/PD-1 P2Y-3 PBY-1/2/3/4/5 |
VP-21 was a Patrol Squadron of the U.S. Navy. The squadron was established as Patrol Squadron 7-B (VP-7B) on 23 July 1929, redesignated Patrol Squadron 7-F (VP-7F) on 1 July 1931, redesignated Patrol Squadron 7 (VP-7) on 1 October 1937, redesignated Patrol Squadron 11 (VP-11) on 1 July 1939, redesignated Patrol Squadron 21 (VP-21) on 1 February 1941 and disestablished on 18 April 1942, with the squadron assets merged with VP-101. It was the third squadron to be designated VP-21, the first VP-21 was redesignated VP-45 on 1 July 1939 and the second VP-21 was redesignated VP-1 on 30 July 1940.[1]
- ^ Roberts, Michael D. (2000). Dictionary of American Naval Aviation Squadrons, Volume 2, Chapter 3 Patrol Squadron (VP) Histories (3rd VP-18 to 1st VP-22). Washington, D.C.: Naval Historical Center, Department of the Navy. pp. 118–22. Retrieved 12 June 2016.