Surname Kidau (Kidau 
) , in all the world, is a rare family name. The last name Kidau is habitual in Tanzania, where it is a rare surname, Indonesia, where it is a very rare surname, and the United States, where it is an extremely rare surname. Very seldom, Kidau is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kidau | Tanzania, United States, India, Indonesia, Nigeria |