Cognomen Isoyev (Исоев 
, Isoyev 
) , across the world, is quite a rare surname. The family name Isoyev is habitual in Tajikistan, where it is quite a rare surname, Russia, and Kyrgyzstan, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Исоев | Armenia, Russia, Kyrgyzstan, Belarus, Tajikistan |
| Isoyev | Tajikistan, United States |