Royal Air Force Coolham, or RAF Coolham, also known as Coolham Advanced Landing Ground (ALG), is a former British Second World War Royal Air Force Advanced Landing Ground, a type of temporary advance airfield. The airfield is located in Coolham, England. The site was surveyed for suitability by the Air Ministry between June and July of 1942 and in October of 1942 it was agreed that an ALG (Advanced Landing Ground) would be constructed there, to be one of seven constructed in Sussex during the war.