Last name Flauw (Flau 
, Flov , Flauw 
) , in all the world, is a rare surname. The surname Flauw is habitual in Western Europe, particularly France, where it is a rare surname, Germany, and Belgium. Not in comparison with a country's population, this name is the most popular in France, Germany, and Brazil. Much less frequently, Flauw is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Flau | Spain, Brazil, France, United States, Germany |
| Flov | Brazil, United States |
| Flauw | Belgium, France |