Surname Petigrew (Petigrew 
) , in the world, is a very rare last name. The cognomen Petigrew is habitual in Australia, where it is a very rare surname, Canada, and the United Kingdom, where it is an extremely rare surname. Measured by absolute frequency, it is commonest in the United States, Canada, and Australia.
| VARIANT | COUNTRY |
|---|---|
| Petigrew | United Kingdom, Australia, United States, Canada |