MDP Wethersfield is a Ministry of Defence facility in Essex, England, located north of the village of Wethersfield, about 6 mi (9.7 km) north-west of the town of Braintree. Originally an RAF station, the site was later used as the headquarters and training centre of the Ministry of Defence Police until 2022. It now houses asylum seekers.

It started as RAF Wethersfield opening in 1944 and during World War II it was used by the Royal Air Force and United States Army Air Forces. It was closed in 1946, and was reopened in 1951 as a result of the Cold War. Used until 1970 as a United States Air Force fighter airfield, it was held as a reserve airfield until 1993, when it came under control of the Ministry of Defence Police.