Surname Sinkiewicz (Sinkiewicz 
) , throughout the world, is quite a rare last name. The surname Sinkiewicz is habitual in Poland, where it is quite a rare surname, Lithuania, where it is a rare surname, and Uruguay. Not in comparison with a country's population, it is the most numerous in Poland, the United States, and Germany. Likewise, Sinkiewicz is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sinkiewicz | Germany, Canada, United States, Poland, Lithuania |
| helena sinkiewicz Polish Righteous Among the Nations, PL (b. 1921) |
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lukas sinkiewicz German footballer, PL (b. 1985) |
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| władysław sinkiewicz Polish cardiologist, PL |
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