| Marine Fighter Attack Squadron 531 | |
|---|---|
 VMFA-531 Insignia | |
| Active | 16 November 1942 – 27 March 1992 |
| Country |  United States of America |
| Branch |  United States Marine Corps |
| Type | Fighter/Attack |
| Role | Close air support Air interdiction Aerial reconnaissance |
| Part of | Inactive |
| Nickname(s) | "Grey Ghosts" |
| Tail Code | EC |
| Engagements | |
| Commanders | |
| Notable commanders | LtCol Robert P. Keller LtCol John F. Goodman LtCol Keith Stalder |
| Aircraft flown | |
| Bomber | Lockheed PV-1 Ventura Douglas SBD Dauntless Curtiss SB2C Helldiver |
| Fighter | Grumman F7F Tigercat Douglas F3D Skynight Douglas F4D Skyray McDonnell-Douglas F-4 Phantom II McDonnell-Douglas F/A-18 Hornet |
| Trainer | North American SNJ Brewster SB2A Buccaneer |
Marine Fighter Attack Squadron 531 (VMFA-531) was a United States Marine Corps fighter squadron consisting of various types aircraft from its inception culminating with the F/A-18 Hornet. Known as the "Grey Ghosts", the squadron participated in action during World War II and the Vietnam War. They were decommissioned on 27 March 1992.