Operation Titanic was the codename for an operation carried out on 5-6 June 1944 by the Royal Air Force and the Special Air Service in support of the Normandy landings during the Second World War. The objective of the operation was to drop 500 dummy parachutists, in areas away from the landing beaches, to persuade the Germans that the invasion was spread over a greater area and thus entice troops away from the actual invasion zone. The episode was depicted in the 1962 film The Longest Day.

Titanic was one of four Royal Air Force deception operations carried out at the time, the others being Operation Glimmer by No. 218 Squadron, Operation Taxable by No. 617 Squadron and Operation Airborne Cigar by No. 101 and No. 214 squadrons.

The Allies had a number of deception plans in connection with the planned invasion of Europe. Operation Fortitude was the deception operation for the Normandy landings or Operation Overlord. It was divided into Fortitude North, a threat to invade Norway, and Fortitude South, designed to induce the Germans to believe that the main invasion of France would occur in the Pas de Calais rather than Normandy.