817 Naval Air Squadron was a unit of the Royal Navy Fleet Air Arm during the Second World War and the Cold War.

817 Naval Air Squadron
Naval Ensign
Country	United Kingdom
Branch	Royal Navy
Role	Anti-submarine warfare
Part of	Fleet Air Arm
Battle honours	Norway 1941 Biscay 1942 North Africa 1942 Atlantic 1942 Sicily 1943

In 1941, the squadron operated Fairey Albacore aircraft in the Anti-Submarine Warfare role in Icelandic and Mediterranean waters. The Squadron was reformed in 1943, with Fairey Barracuda aircraft and carried out operations in the Far East before disbanding at the end of the war.^[1]

The squadron was reformed as 817 Squadron RAN in 1950.