Royal Air Force Boxted or more simply RAF Boxted is a former Royal Air Force station located 4 miles (6.4 km) north-northeast of Colchester, Essex, England.

Opened in 1943, it was used by the United States Army Air Forces (USAAF). RAF Boxted has the distinction of having been the airfield for the two most successful USAAF fighter groups in air-to-air combat. After the war it was used by the Royal Air Force for jet aircraft testing. It was closed in 1947.

Today the remains of the airfield are located on private property being used as agricultural fields. It also has a small grass private airstrip and a museum which opened in 2011.

The airfield was used by the United States Army Air Forces Eighth Air Force and Ninth Air Forces. It was known as USAAF Station AAF-150 for security reasons by the USAAF during the war, and by which it was referred to instead of location. Its USAAF Station Code was "BX".

USAAF Station Units assigned to RAF Boxted were:

Although Boxted was scheduled to receive the 96th Bombardment Group in June 1943, plans were changed and the Boeing B-17 Flying Fortress group went instead to RAF Snetterton Heath in Norfolk. In its place, the 386th Bombardment Group (Medium) was moved from Snetterton on 12 June to consolidate the Martin B-26 Marauder groups in Essex for operations. The group was assigned to the VIII Bomber Command 3d Bomb Wing and flew both B-26B/C Marauder aircraft. Its operational squadrons were:

The group flew its first mission on 20 July, with operations concentrating on airfields but also attacked marshalling yards and gun positions along the channel coast.

The group was transferred to RAF Great Dunmow on 24 September 1943.