Last name Relka (Relka 
) , throughout the world, is a very rare cognomen. The last name Relka is habitual in Greece, where it is a very rare surname, Germany, and the United States, where it is an extremely rare surname. In absolute terms, it is the most numerous in the United States, India, and Germany. More prevalently, Relka is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Relka | United States, Germany, Democratic Republic of the Congo, Greece, India |