Cognomen Trewick (Trewick 
) , worldwide, is a rare surname. The family name Trewick is habitual in the United Kingdom, where it is a rare surname, Australia, and New Zealand. Measured by absolute frequency, this name is the most popular in the United Kingdom, the United States, and Australia.
| VARIANT | COUNTRY |
|---|---|
| Trewick | United Kingdom, Australia, South Africa, Mexico, United States |
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steven a. trewick New Zealand ecologist and professor, NZ |
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| george trewick former professional footballer (1933-2003), GB (b. 1933) |
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| alan trewick association football player (1941-1993), GB (b. 1941) |
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| john trewick English footballer, manager (born 1957), GB (b. 1957) |
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