Worldwide, Caswell (Caswell 
) is quite a rare boy's forename. The forename Caswell is habitual in South Africa, where it is quite a rare masculine name, Jamaica, and Zimbabwe, where it is a rare masculine name. Measured by absolute frequency, it is the most numerous in South Africa, the United States, and Zimbabwe. More prevalently, Caswell is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Caswell | Australia, Canada, United States, United Kingdom, South Africa |
|
burr caswell businessman (1807-1896), US (b. 1807) |
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lilley brewer caswell American author, US (b. 1848) |
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| hollis caswell American educator (1901-1988), US (b. 1901) |
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shanley caswell American actress, US (b. 1991) |
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| gay caswell Canadian politician, CA (b. 1948) |
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