Surname Košćina (Košćina 
) , all around the world, is a very rare cognomen. The surname Košćina is habitual in Croatia, where it is a rare surname, and Chile, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Košćina | Chile, Croatia |
|
silvija košćina Yugoslav actress (1933-1994), HR (b. 1933) |
|