Allan Harry Beckett MBE (b. 4 March 1914, East Ham, London Borough of Newham, United Kingdom, d. 19 June 2005, Farnborough, London) was a civil engineer whose design for the 'Whale' floating roadway was crucial to the success of the Mulberry harbour that was used in the Normandy Landings. Starting the war as a sapper digging trenches on the South Coast at the time of the Dunkirk evacuation, Allan Beckett came to play a significant role in the success of the Mulberry harbour used during and after the Normandy landings of June 1944.