Last name Lopec (Lopec 
) , throughout the world, is a very rare cognomen. The family name Lopec is habitual in Croatia, where it is a rare surname, Spain, where it is an extremely rare surname, and the United States. Very seldom, Lopec is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Lopec | Croatia, Spain, United States, Philippines |