Surname Klotchkov (Клочков 
, Klotchkov 
) , in all the world, is a common cognomen. The surname Klotchkov is characteristic of Eastern Europe, particularly Russia, where it is quite a common surname, Belarus, where it is quite a rare surname, and Ukraine. In absolute terms, it most frequently occurs in Russia, Ukraine, and Kazakhstan.
| VARIANT | COUNTRY |
|---|---|
| Клочков | Kyrgyzstan, Russia, Belarus, Kazakhstan, Ukraine |
| Klotchkov | Costa Rica, Germany, Spain, Russia, Mexico |