Cognomen Penketh (Penketh 
) , across the world, is a rare surname. The last name Penketh is characteristic of Isle of Man, where it is quite a rare surname, the United Kingdom, where it is a rare surname, and New Zealand. Not in comparison with a country's population, this name is the most popular in the United Kingdom, Australia, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Penketh | Canada, New Zealand, Australia, United States, United Kingdom |
| a.p. penketh rugby union player, IM (b. 1865) |
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| andrew penketh (b. 1966) |
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| thomas penketh English Augustinian friar and theologian |
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| philip g penketh researcher |
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