Family name Дудойть (Дудойть 
) , around the world, is a very rare cognomen. The cognomen Дудойть is habitual in Belarus, where it is a rare surname, Russia, where it is a very rare surname, and Kazakhstan. Measured by absolute frequency, it is commonest in Eastern Europe, particularly Belarus, Russia, and Ukraine.
| VARIANT | COUNTRY |
|---|---|
| Дудойть | Kazakhstan, Ukraine, Russia, Belarus |