Grantham (surname)
Grantham is an English surname which has been spread to North America and Australasia. Notable people with the surname include:

 Alexander Grantham (1899–1978), British colonial administrator
 Billy Grantham (1880–1942), British middle-distance runner
 Donald Grantham (born 1947), American composer
 Donte Grantham (born 1995), American basketball player
 Eric Grantham (1913–1989), British sports shooter
 George Grantham (baseball) (1900–1954), American baseball player
 George Grantham (economic historian) (born 1941), American economic historian
 George Grantham (musician) (born 1947), American drummer and vocalist
 Sir Guy Grantham (1900–1992), British Admiral, Commander-in-Chief at Portsmouth
 Jared J. Grantham (1936–2017), American physician and nephrologist
 Jeremy Grantham (born 1938), Chairman of the Board of Grantham Mayo Van Otterloo, a Boston-based asset management firm
 John Grantham (1809–1874), English engineer
 Joseph Grantham (died 1830), first police officer to be killed on duty in the United Kingdom
 Kevin Grantham (born 1970), American politician
 Larry Grantham (1938–2017), American football player
 Leslie Grantham (1947–2018), British TV actor
 Richard Grantham (1677–1723), English politician
 Roy Grantham (1926–2013), British trade union leader
 Sir Thomas Grantham (1640s–1718), commander of the naval fleet of the British East India Company
 Thomas Grantham (died 1558) (1520s–1558), English politician
 Thomas Grantham (died 1630) (1573–1630), English politician
 Thomas Grantham (Baptist) (1634–1692), English General Baptist minister and theologian
 Thomas Grantham (Parliamentarian) (1612–1655), English politician 
 Todd Grantham (born 1966), American football coach
 Tony Grantham (born 1972), New Zealand lawn bowler
 Travis Grantham (born 1979), American politician
 Vincent Grantham (died 1550), English MP
 Violet Grantham (1893–1983), British politician
 William Grantham (1835–1911), English judge and Conservative M.P. for East Surrey and Croydon

External links
 Grantham Surname DNA Project

English toponymic surnames