| Royal Naval Air Station Merryfield | |
| Ensign: | Naval Ensign of the United Kingdom.svg |
| Partof: | RNAS Yeovilton (HMS Heron) |
| Location: | Ilton, Somerset, in England |
| Pushpin Map: | Somerset |
| Pushpin Mapsize: | 300 |
| Pushpin Label: | RNAS Merryfield |
| Pushpin Map Caption: | Location in Somerset |
| Type: | Royal Naval Air Station |
| Ownership: | Ministry of Defence |
| Condition: | operational |
| Used: | 1971–present |
| Battles: | Cold War |
| Elevation: | 45m (148feet) |
| Iata: | N/a |
| Icao: | EGDI |
| Wmo: | 03334 |
| R1-Number: | 03/21 |
| R1-Length: | 1249m (4,098feet) |
| R1-Surface: | asphalt |
| R2-Number: | 09/27 |
| R2-Length: | 1744m (5,722feet) |
| R2-Surface: | asphalt |
| R3-Number: | 16/34 |
| R3-Length: | 1077m (3,533feet) |
| R3-Surface: | asphalt |
Royal Naval Air Station Merryfield, commonly known as RNAS Merryfield, is an air station of the Royal Navy's Fleet Air Arm located 2.7miles north-west of Ilminster, and 8.1miles south-east of Taunton, in the English county of Somerset, in England.
See main article: RAF Merryfield. The following squadrons were located here at some point:[1]
The site is mainly used for military helicopter exercises, and there are a large number of lettered helicopter landing spots spread across the site on the taxiways.