Family name Щёлкова (Щёлкова 
) , throughout the world, is a very rare cognomen. The family name Щёлкова is habitual in Kazakhstan, where it is a rare surname, Belarus, where it is a very rare surname, and Russia, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Щёлкова | Kazakhstan, Russia, Belarus |
Scelkova, Schelkova, Shchelkova, and Shelkova