Royal Marines Barracks Chivenor is a British military base used primarily by 3 Commando Brigade. It is situated on the northern shore of the River Taw estuary, adjacent to the South West Coast Path, on the north coast of Devon, England. The nearest towns are Barnstaple and Braunton.

Originally a civil airfield opened in the 1930s, the site was taken over by the Royal Air Force (RAF) and was operational between May 1940 and 1995 when it was transferred to the Royal Marines.