Cognomen Petúnia (Pety 
, Petum 
, Petun 
) , around the globe, is a rare surname. The family name Petúnia is habitual in Hungary, where it is a rare surname, Malaysia, and Romania. Not in comparison with a country's population, this name is the most popular in Indonesia, France, and Malaysia. Likewise, Petúnia is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Pety | France, Malaysia, Indonesia, Romania, Afghanistan |
| Petum | India, Indonesia, United States |
| Petun | Malaysia, India, Mexico, Indonesia |
| Petúnia | Brazil |