No. 212 Squadron RAF is an inactive Royal Air Force aircraft squadron. The squadron was first formed as No. 12 Squadron RNAS as a training unit within No 1 Wing of the Royal Naval Air Service at Hondschoote on 8 June 1917. Unlike other RNAS squadrons, it was not redesignated to an RAF 200-series squadron number on the day the RAF was established (1 April 1918) as the squadron was disbanded.