Family name Gillam (Gillam 
) , all around the world, is quite a common last name. The last name Gillam is characteristic of Australia, where it is quite a rare surname, New Zealand, and the United Kingdom. Measured by absolute frequency, the name is most common in the United States, the United Kingdom, and Australia. Much less frequently, Gillam is the forename as well as the last name.
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| Gillam | Australia, Canada, United States, New Zealand, United Kingdom |
| zachariah gillam Canadian ship captain (b. 1636) |
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| samuel gillam GB (b. 1722) |
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frances gillam holden Australian nurse (1843-1924), AU (b. 1843) |
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bernhard gillam American political cartoonist, US (b. 1856) |
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victor gillam American cartoonist, GB (b. 1867) |
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| george f. gillam American politician, US (b. 1836) |
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| charles w. gillam American politician in Minnesota (1861-1933), US (b. 1861) |
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| george edwin gillam American politician, US (b. 1863) |
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| william charles frederick gillam English etcher (b. 1867) |
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| sam gillam Welsh footballer (1868-1938), GB (b. 1868) |
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| harold gillam (b. 1903) |
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| geoffrey gillam GB (b. 1905) |
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| peter michael stephen gillam b.2 December 1930 d.27 July 2008 (b. 1930) |
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| robert gillam American investor (1946–2018), US (b. 1946) |
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| thomas anthony gillam (born 1947), GB (b. 1947) |
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