Family name Kirnosova (Кирносова 
, Kirnosova 
) , throughout the world, is a rare surname. The surname Kirnosova is habitual in Latvia, where it is a rare surname, Russia, and Belarus. Not in comparison with a country's population, it is commonest in Russia, Kazakhstan, and Ukraine.
| VARIANT | COUNTRY |
|---|---|
| Кирносова | Kazakhstan, Russia, Kyrgyzstan, Belarus, Ukraine |
| Kirnosova | Germany, Russia, Georgia, Latvia |