Operation Titanic was a series of military deceptions carried out by the Allied Nations during the Second World War. They formed part of tactical element of Operation Bodyguard, the cover plan for the Normandy landings. Titanic was carried out on 5–6 June 1944 by the Royal Air Force and the Special Air Service. Its objective was to drop hundreds of dummy parachutists, noisemakers and small numbers of special forces troops in locations away from the real Normandy drop zones. It hoped to deceive the German defenders into believing that a large force had landed, drawing troops away from the beachheads and other strategic sites.

Operation Bodyguard was the code name for a World War II deception strategy employed by the Allied states before the 1944 invasion of northwest Europe. Bodyguard set out an overall stratagem for misleading the Oberkommando der Wehrmacht as to the time and place of the invasion. Planning for Bodyguard was started in 1943 by the London Controlling Section, a department of the war cabinet. They produced a draft strategy, referred to as Plan Jael, which was presented to leaders at the Tehran Conference in late November and, despite scepticism due to the failure of earlier deception strategy, approved on 6 December 1943.