Cognomen Pettett (Pettett 
) , in all the world, is a rare surname. The last name Pettett is characteristic of Australia, where it is a rare surname, New Zealand, and the United Kingdom. Measured by absolute frequency, it is commonest in the United States, Australia, and the United Kingdom.
| VARIANT | COUNTRY |
|---|---|
| Pettett | United Kingdom, Australia, United States, South Africa, New Zealand |
| william henry pettett Australian politician (1814-1871), GB (b. 1814) |
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| sue pettett British sprinter, GB (b. 1956) |
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| carly e pettett researcher |
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| lyndall pettett researcher (ORCID 0000-0001-7449-6721) |
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