Leslie Howarth, FRS (23 May 1911 – 22 September 2001) was a British mathematician who dealt with hydrodynamics and aerodynamics.
[1] He was educated at Accrington Grammar School, whence he moved to the University of Manchester and then on to Gonville and Caius College, Cambridge.
At Cambridge Howarth received a bachelor's degree in mathematics in 1933 and a doctorate under the supervision of Sydney Goldstein in 1936.
During World War II he worked first in ballistics and from 1942 at the Armament Research Department.
After the war, he was a lecturer at St John's College, Cambridge, where Abdus Salam was one of his students, and from 1949 Professor of Applied Mathematics at the University of Bristol.