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Family name Rupkus (Rupkus
) , globally, is a rare cognomen. The surname Rupkus is characteristic of Northern Europe, particularly Latvia, where it is quite a rare surname, Lithuania, and the United Kingdom, where it is a very rare surname. Measured by absolute frequency, it most frequently occurs in Latvia, Lithuania, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Rupkus | Latvia, Lithuania, United States, United Kingdom |