Cognomen Радзиковский (Radzikowski 
, Радзиковский 
, Radzikovsky 
) , in the world, is quite a rare surname. The cognomen Радзиковский is habitual in Poland, where it is quite a rare surname, Ireland, where it is a rare surname, and Canada, where it is a very rare surname. In absolute terms, it is commonest in Poland, the United States, and Brazil. Also, Радзиковский is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Radzikowski | Poland, Brazil, France, Germany, United States |
| Радзиковский | Ukraine, Kazakhstan, Russia |
| Radzikovsky | Canada |
| Radzikovskii | Russia |