Family name Klopec (Klopec 
) , in the world, is a very rare cognomen. The last name Klopec is characteristic of Eastern Europe, particularly Czechia, where it is a rare surname, and Poland, where it is a very rare surname. Likewise, Klopec is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Klopec | Poland, Czechia |