Royal Air Force Marham, commonly abbreviated RAF Marham (IATA: KNF, ICAO: EGYM) is a Royal Air Force station near the village of Marham in the county of Norfolk, East Anglia.

It is home to No. 138 Expeditionary Air Wing (138 EAW) and, as such, is one of the RAF's 'main operating bases' (MOB). Since 6 June 2018, it has been home to the fifth generation Lockheed Martin F-35B Lightning operated by No. 617 (Dambusters) Squadron. No. 207 Squadron, becoming the second Lightning squadron to be based at RAF Marham when it reformed on 1 August 2019 as the F-35 operational conversion unit (OCU).