Family name Delau (Delau 
) , across the world, is quite a rare last name. The family name Delau is habitual in Indonesia, where it is a rare surname, France, and Germany. Very seldom, Delau is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Delau | Democratic Republic of the Congo, France, India, Germany, Indonesia |
| olivier delau French writer, FR (b. 1950) |
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| reinhard delau (b. 1940) |
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| helga delau DE (b. 1946) |
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