Family name Полоний (Polonia 
, Polony 
, Полоний 
) , throughout the world, is quite a common last name. The family name Полоний is characteristic of the Dominican Republic, where it is quite a common surname, Slovakia, where it is quite a rare surname, and Portugal. Not in comparison with a country's population, it is commonest in the Dominican Republic, Poland, and Mexico. Likewise, Полоний is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Polonia | Mexico, Dominican Republic, Poland, Argentina, Peru |
| Polony | United States, Poland, France, Brazil, Slovakia |
| Полоний | Russia |
| полоний, юрий станиславович Hero of the Soviet Union (1911-1955), RU (b. 1911) |
|