Surname Gelau (Gelau 
) , throughout the world, is a rare last name. The last name Gelau is habitual in Malaysia, where it is a rare surname, Germany, where it is a very rare surname, and the United States, where it is an extremely rare surname. Much less frequently, Gelau is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gelau | India, United States, Germany, Malaysia |
| ludwig gelau DE (b. 1849) |
|