Family name Кто-То (Кто-То 
) , in the world, is an extremely rare surname. The surname Кто-То is habitual in Eastern Europe, particularly Russia, where it is an extremely rare surname. More frequently, Кто-То is the forename as well as the last name. Parts of the name also exists independently as a first name Кто, and a last name То.
| VARIANT | COUNTRY |
|---|---|
| Кто-То | Russia |