Last name Portlock (Portlock 
) , worldwide, is quite a rare surname. The family name Portlock is habitual in the United Kingdom, where it is a rare surname, Australia, and New Zealand. Not in comparison with a country's population, this name is the most popular in the United States, the United Kingdom, and Australia.
| VARIANT | COUNTRY |
|---|---|
| Portlock | Australia, United Kingdom, Canada, South Africa, United States |
|
nathaniel portlock British ship's captain, US (b. 1748) |
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| nathaniel ferguson portlock (born 1782) (b. 1782) |
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| nathaniel james portlock Peerage person ID=601323 (b. 1791) |
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| joseph ellison portlock British geologist (b. 1794) |
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| joseph portlock Peerage person ID=373530 |
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| nathaniel portlock (died 1817) |
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| theo j portlock researcher |
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| adrian portlock Peerage person ID=398665 |
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| tim portlock visual artist, US |
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| joseph e. portlock |
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