Cognomen Koulkova (Koulkova 
, Кулкова 
) , globally, is a rare surname. The cognomen Koulkova is characteristic of Russia, where it is a rare surname, Mexico, where it is an extremely rare surname, and Ukraine.
| VARIANT | COUNTRY |
|---|---|
| Koulkova | Mexico |
| Кулкова | Russia, Ukraine |