Cognomen Claybrook (Claybrook 
) , all around the world, is quite a rare surname. The last name Claybrook is characteristic of the United States, where it is a rare surname, Australia, and the United Kingdom. Very seldom, Claybrook is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Claybrook | United Kingdom, Australia, United States, Canada, New Zealand |
| edwin claybrook American surgeon, US (b. 1871) |
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| claybrook cottingham American academic, US (b. 1881) |
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| elbert pee wee claybrook American jazz swing musician (b. 1912) |
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| joan claybrook American activist, US (b. 1937) |
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| william claybrook |
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| john claybrook |
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