Surname Gouseinov (Гусейнов 
, Гусеинов 
, Gouseinov 
) , all around the world, is a common last name. The cognomen Gouseinov is characteristic of Azerbaijan, where it is quite a common surname, Russia, and Kazakhstan, where it is quite a rare surname. Measured by absolute frequency, it is commonest in Russia, Azerbaijan, and Ukraine. Very seldom, Gouseinov is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Гусейнов | Azerbaijan, Kazakhstan, Ukraine, Russia, Poland |
| Гусеинов | Kyrgyzstan, Azerbaijan, Kazakhstan, Belarus, Russia |
| Gouseinov | Canada, United States |