Family name Цось (Cos 
, Цось 
) , in all the world, is a common surname. The last name Цось is habitual in Guatemala, where it is quite a common surname, Philippines, where it is quite a rare surname, and Algeria. Much less frequently, Цось is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Cos | Algeria, Guatemala, Spain, Philippines, Argentina |
| Цось | Russia, Ukraine |