| Brian Haselgrove | |
| Birth Date: | 26 September 1926 |
| Birth Place: | Waltham Forest, London, England |
| Alma Mater: | University of Cambridge |
| Doctoral Advisor: | Albert Ingham |
| Thesis Title: | Some theorems in the analytic theory of numbers |
| Thesis Year: | 1956 |
| Known For: | Disproof of Pólya conjecture |
| Awards: | Smith's Prize (1950) |
Colin Brian Haselgrove (26 September 1926 - 27 May 1964) was an English mathematician who is best known for his disproof of the Pólya conjecture in 1958.[1]
Haselgrove was educated at Blundell's School and from there won a scholarship to King's College, Cambridge. He obtained his Ph.D., which was supervised by Albert Ingham, from Cambridge in 1956.
Haselgrove was married to fellow mathematician Jenifer Haselgrove. After having suffered minor epileptic fits for several years caused by a brain tumor, he died in Manchester in May 1964.