Sir Harry Raymond Pitt FRS (3 June 1914 – 8 October 2005) was a British mathematician.Harry Raymond Pitt was born in West Bromwich in 1914, the son of Harry and Harriet Pitt. He attended King Edward's School, Stourbridge, before going up to Peterhouse, Cambridge.From 1936 to 1939 he held a Fellowship at Peterhouse, during which period he spent about a year at Harvard as a Choate Memorial Fellow.