Surname Kosatyi (Kosatyi 
, Косатый 
) , all around the world, is a rare cognomen. The last name Kosatyi is habitual in Belarus, where it is a rare surname, Kazakhstan, and Russia, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Kosatyi | Russia |
| Косатый | Kazakhstan, Russia, Belarus |