Cognomen Billauer (Billauer 
) , in all the world, is a very rare last name. The surname Billauer is characteristic of Estonia, where it is a rare surname, Israel, where it is a very rare surname, and Canada. In absolute terms, the name is most common in the United States, Canada, and Estonia.
| VARIANT | COUNTRY |
|---|---|
| Billauer | Israel, Canada, Estonia, United States |
| abraham billauer PL (b. 1885) |
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| jesse billauer American surfer, US (b. 1979) |
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