Blagrave is a surname, and may refer to:
Daniel Blagrave (1603–1668), English politician
Herbert Blagrave (1899–1981), English cricketer
John Blagrave (c. 1561 – 1611), English mathematician
John Blagrave (major) (1630–1704), English politician
Mark Blagrave (born 1956), Canadian writer
Thomas Blagrave (died 1590), English official