Cognomen Repnau (Repnau 
) , in all the world, is a very rare family name. The cognomen Repnau is characteristic of Estonia, where it is quite a rare surname, France, where it is an extremely rare surname, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Repnau | Estonia, United States, France |
| ants repnau (b. 1914) |
|