Last name Куприйанов (Kupriyanov 
, Куприйанов , Kuprijanov 
) , in the world, is quite a rare cognomen. The surname Куприйанов is habitual in Estonia, where it is quite a rare surname, Cyprus, and Belarus, where it is a rare surname. In absolute terms, it is commonest in Russia, Belarus, and Estonia.
| VARIANT | COUNTRY |
|---|---|
| Kupriyanov | Kazakhstan, Russia, Czechia, Belarus, Israel |
| Куприйанов | Russia |
| Kuprijanov | Germany, Russia, Czechia, Estonia, Belarus |