Nicholas Peter Sorrel Straussler (in Hungarian: Straussler Miklós Péter) (7 May 1891 – 3 June 1966) was an engineer mainly remembered for devising the flotation system used by Allied amphibious DD tanks during World War II. Born in Hungary, he developed a reputation as an innovative automotive engineer before becoming a British citizen during the interwar period. His work was mainly to do with amphibious, off-road and military vehicles.