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Cognomen Sebast (Sebast
) , in the world, is a rare last name. The surname Sebast is characteristic of Slovenia, where it is a rare surname, Germany, and the United States, where it is a very rare surname. Measured by absolute frequency, it is the most numerous in Germany, the United States, and France. Likewise, Sebast is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sebast | Colombia, France, United States, Democratic Republic of the Congo, Germany |