Surname Kupov (Kupov 
) , worldwide, is a very rare cognomen. The cognomen Kupov is habitual in Bulgaria, where it is a rare surname, Russia, where it is an extremely rare surname, and the United Kingdom. Not in comparison with a country's population, this name is the most popular in Bulgaria, Russia, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Kupov | Russia, Bulgaria, United States, United Kingdom |