| Marine Attack Squadron 131 | |
|---|---|
 VMA-131 Insignia | |
| Active | Mar 1919 - 16 Nov 1945 15 Apr 1958 – 5 Dec 1998 |
| Country | United States |
| Allegiance | United States of America |
| Branch | United States Marine Corps |
| Type | Attack Squadron |
| Role | Close air support Air interdiction |
| Part of | Inactive |
| Nickname(s) | Diamondbacks |
| Tail Code | QG |
| Engagements | Banana Wars * Dominican Republic World War II * Battle of Guadalcanal * Battle of Okinawa |
| Commanders | |
| Notable commanders | Vernon M. Guymon |
| Aircraft flown | |
| Attack | A-4 Skyhawk |
| Bomber | O3U-6 Corsair Great Lakes BG (1939-41) SB2U-3 Vindicator SBD Dauntless TBM Avenger |
Marine Attack Squadron 131 (VMA-131) was an A-4 Skyhawk attack squadron in the United States Marine Corps. The squadron, also known as the "Diamondbacks", were part of the Marine Forces Reserve and were based at Naval Air Station New York, Brooklyn, New York from 1960 through 1970 and NASJRB Willow Grove from 1971 until their deactivation in 1998.