Number 15 Squadron, sometimes written as No. XV Squadron, was a squadron of the Royal Air Force. It most recently operated the Panavia Tornado GR4 from RAF Lossiemouth as No. XV (Reserve) Squadron. It was the RAF's Operational Conversion Unit for the Tornado GR4 which taught pilots and Weapon Systems Officers (WSO) how to fly the aircraft and what tactics to use to best exploit the performance of their aircraft and its weapons.

Royal Air Force Lossiemouth or more commonly RAF Lossiemouth is a military airfield located on the western edge of the town of Lossiemouth in Moray, north-east Scotland.