Family name Sloniec (Sloniec 
) , around the globe, is a rare surname. The surname Sloniec is habitual in United Arab Emirates, where it is a rare surname, Poland, and Australia, where it is a very rare surname. Not in comparison with a country's population, the name is most common in United Arab Emirates, Poland, and Brazil. More prevalently, Sloniec is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sloniec | Australia, United Arab Emirates, Brazil, Poland, United States |