Cognomen Petties-Barnett (Petties-Barnett 
) , in the world, is an extremely rare surname. The last name Petties-Barnett is habitual in Northern America, particularly the United States, where it is an extremely rare surname. Parts of the name also exists independently as a last name Petties, and a last name Barnett.
| VARIANT | COUNTRY |
|---|---|
| Petties-Barnett | United States |