Surname Protopopow (Протопопов 
, Protopopow 
) , all over the world, is quite a common last name. The cognomen Protopopow is characteristic of Russia, where it is quite a rare surname, Ukraine, and Kazakhstan.
| VARIANT | COUNTRY |
|---|---|
| Протопопов | Kazakhstan, Russia, Kyrgyzstan, Belarus, Ukraine |
| Protopopow | Germany, Austria, United States |
| siergiej protopopow (b. 1923) |
|