| RAF Metfield USAAF Station 366 
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|---|---|
| Located near Metfield, Suffolk, England | |
 RAF Metfield - January 1947 | |
  RAF Metfield USAAF Station 366 | |
| Coordinates | 52°22′01″N 1°23′46″E / 52.367°N 1.396°E |
| Type | Royal Air Force station |
| Site information | |
| Owner | Air Ministry |
| Controlled by |  Royal Air Force United States Army Air Forces |
| Site history | |
| Built | 1943 |
| In use | 1943-1945 |
| Battles/wars | European theatre of World War II Air Offensive, Europe July 1942 - May 1945 |
| Garrison information | |
| Garrison | Eighth Air Force |
| Occupants |  353d Fighter Group 491st Bombardment Group |
Royal Air Force Metfield or more simply RAF Metfield is a former Royal Air Force station located just to the southeast of the village of Metfield, Suffolk, England.
Metfield was built as a standard, Class-A bomber design airfield, consisting of three intersecting concrete runways, fifty dispersal points and two T-2 type hangars. Additional buildings were also erected to house about 2,900 personnel on former farmland to the southwest. When it was constructed in 1943, it necessitated the closure of the B1123 road between Halesworth and Harleston.