Royal Air Force St. Eval or RAF St. Eval was a strategic Royal Air Force station for the RAF Coastal Command during the Second World War (situated in Cornwall, England, UK). St Eval's primary role was to provide anti-submarine and anti-shipping patrols off the south west coast. Aircraft from the airfield were also used for photographic reconnaissance missions, meteorological flights, convoy patrols, air-sea rescue missions and protection of the airfield from the Luftwaffe.