Surname Radchanka (Radchanka 
) , throughout the world, is a very rare cognomen. The family name Radchanka is habitual in Lithuania, where it is a rare surname, Belarus, and Chile, where it is an extremely rare surname. In absolute terms, this name is the most popular in Belarus, Lithuania, and Russia.
| VARIANT | COUNTRY |
|---|---|
| Radchanka | Russia, Lithuania, Chile, United States, Belarus |