Across the world, Rosenau (Rosenau 
, Розенау 
, רוזנאו 
) is an extremely rare female first name. Much more prevalently, Rosenau is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Rosenau | Germany, United States, Poland, Canada, Brazil |
| Розенау | Kazakhstan, Ukraine |
| רוזנאו | Israel |
| gottlieb rosenau SE (b. 1719) |
|
|
|
kersten rosenau German politician and entrepreneur, DE (b. 1957) |
|
| bastian rosenau DE (b. 1980) |
|