Surname Курбонбой (Курбонбой 
) , in all the world, is an extremely rare cognomen. The surname Курбонбой is characteristic of Central Asia, particularly Kyrgyzstan, where it is a very rare surname. Much more prevalently, Курбонбой is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Курбонбой | Kazakhstan, Russia, Kyrgyzstan, Ukraine, Tajikistan |