Surname Tetau (Tetau 
) , throughout the world, is a rare family name. The cognomen Tetau is habitual in Germany, where it is a rare surname, New Zealand, and Australia, where it is a very rare surname. Also, Tetau is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Tetau | Japan, France, New Zealand, Australia, Germany |