Cognomen Kućko (Kućko 
) , all over the world, is a very rare family name. The cognomen Kućko is characteristic of Poland, where it is a rare surname, and Croatia, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Kućko | Croatia, Poland |
| waldemar kućko PL (b. 1932) |
|
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| agata kućko researcher (ORCID 0000-0002-4653-1152) |
|