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Surname Grajko (Grajko
) , throughout the world, is a rare cognomen. The last name Grajko is habitual in Poland, where it is a rare surname, the United States, where it is an extremely rare surname, and Canada. More prevalently, Grajko is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Grajko | United Kingdom, United States, Poland, Canada |