Surname Kossko (Kossko 
) , around the world, is an extremely rare cognomen. The surname Kossko is habitual in Western Europe, particularly Germany, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Kossko | Germany |
| i.n. kossko botanist (1924-1956) (b. 1924) |
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| nelli kossko German author, DE (b. 1937) |
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