Robert Arthur (Bob) Roseveare (23 May 1923 – 8 December 2004) was an English codebreaker at Bletchley Park during World War II and later a schoolteacher.
Roseveare started in the Watch, then moved to the Quatch, a small backroom group that decoded non-current messages.
After leaving Bletchley Park, Roseveare took up a scholarship he had won in 1941 to St John's College, Cambridge, and was awarded a degree in mathematics in 1947.
In 1948 while touring South Africa and Rhodesia with a mixed Oxford and Cambridge hockey team he accepted a teaching post at Hilton College, Natal.
Between 1985 and 1990 Bob published seven booklets on the Roseveare family, which have been updated and reissued as one book, with information on 14,779 descendants throughout the world.