Surname Biłko (Biłko 
) , in the world, is a very rare cognomen. The family name Biłko is characteristic of Eastern Europe, particularly Poland, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Biłko | Poland |
| alojzy biłko PL (b. 1923) |
|
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| paweł biłko Polish handball player, PL (b. 1988) |
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