Surname Кнопп (Knopp 
, Кнопп 
) , all around the world, is a common cognomen. The last name Кнопп is habitual in Germany, where it is quite a rare surname, Czechia, and Slovakia. Measured by absolute frequency, the name is most common in Germany, the United States, and Brazil. Very seldom, Кнопп is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Knopp | Germany, Czechia, United States, Poland, Brazil |
| Кнопп | Kyrgyzstan, Kazakhstan, Russia, Ukraine |
| кнопп, эгон Latvian politician (1876-1933), LV (b. 1876) |
|