Family name Grantham (Grantham 
) , all around the world, is a common surname. The last name Grantham is characteristic of New Zealand, where it is quite a rare surname, the United Kingdom, and Australia. Not in comparison with a country's population, this name is the most popular in the United States, the United Kingdom, and Australia. Very seldom, Grantham is the forename as well as the last name.
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| Grantham | United Kingdom, Canada, Australia, South Africa, United States |
| vincent grantham English politician (b. 1401) |
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| thomas grantham English politician, died 1558 (b. 1520) |
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| henry grantham English translator (b. 1571) |
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| thomas grantham English politician, GB (b. 1573) |
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| thomas grantham (c.1610–1664), English schoolmaster and author (b. 1610) |
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| thomas grantham English politician and Parliamentarian soldier of the English Civil War (b. 1612) |
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| thomas grantham English General Baptist minister and theologian (b. 1634) |
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| thomas grantham English tobacco trader and commander of the naval fleet of the British East India Company (b. 1641) |
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| richard grantham English politician (b. 1677) |
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| grantham killingworth British baptist (b. 1699) |
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william grantham British politician (b. 1835) |
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| charles grantham British Royal Navy officer, lieutenant in 1809 (1790-?) (b. 1790) |
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| richard boxall grantham British civil engineer (b. 1805) |
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| grantham yorke British priest (b. 1809) |
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| john grantham engineer, GB (b. 1809) |
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