Royal Air Force Crosby-on-Eden, or more simply RAF Crosby-on-Eden, is a former Royal Air Force station located 5.8 miles (9.3 km) north east of Carlisle, Cumbria and 3 miles (4.8 km) west of Brampton, Cumbria.

With the outbreak of war in 1939, RAF Kingstown's runway was too small for bombers, so the Royal Air Force developed a new airstrip at Crosby-on-Eden.

[3] The station was handed over to RAF Coastal Command, hosting No.

9 (Coastal) OTU during August 1942 for training long-range fighter crews on Bristol Beaufort and Bristol Beaufighter conversion squadrons, as well as air firing and night flying.

The following units were also here at some point:[6] Crosby-on-Eden had little post war use and was closed in 1947 with the airfield returning to Carlisle City Council to continue as a municipal airport as what is now named Carlisle Lake District Airport with ownership passing to the Stobart Group.