Surname Blackford (Blackford 
) , throughout the world, is quite a common cognomen. The last name Blackford is habitual in Guernsey, where it is quite a common surname, Liechtenstein, and Jamaica, where it is quite a rare surname. Not in comparison with a country's population, it is the most numerous in the United States, the United Kingdom, and Australia.
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| Blackford | Jamaica, Canada, United Kingdom, United States, Australia |
| alexander forbes of blackford (1657-1712) (b. 1657) |
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isaac blackford Second Chief Justice of the Indiana Supreme Court, US (b. 1786) |
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william m. blackford journalist and American chargé d'affaires to the Republic of New Granada, based in Bogota, US (b. 1801) |
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mary berkeley minor blackford antislavery leader (1802-1896), US (b. 1802) |
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| alexander forbes of blackford (1755-1784) (b. 1755) |
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| john forbes of blackford (1758-1840) (b. 1758) |
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alexander latimer blackford Presbyterian missionary in Brazil from the United States (b. 1829) |
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blackford condit American reverend and writer (1829-1903), US (b. 1829) |
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charles minor blackford lawyer and writer of Civil War stories, US (b. 1833) |
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| alexander forbes of blackford (1786-1851) (b. 1786) |
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lancelot minor blackford (1837–1914) (b. 1837) |
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| elizabeth wiggins simonton blackford American missionary, US (b. 1822) |
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| w. w. blackford (1831-1905) (b. 1831) |
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| benjamin blackford American surgeon, United States Army surgeon, US (b. 1834) |
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| john blackford American politician from Iowa, US (b. 1837) |
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