No. 616 (South Yorkshire) Squadron is an active Reserve unit of the Royal Auxiliary Air Force (RAuxAF) assigned to the RAF ISTAR Force at RAF Waddington. It was originally formed as a unit of the British Auxiliary Air Force in 1938, active throughout World War 2 as a fighter unit, becoming the 1st operational RAF unit to fly jets and disbanded in 1957. The unit reformed in its current guise in April 2019 as 616 (South Yorkshire) Squadron Royal Auxiliary Air Force.