Surname Bilhão (Billion 
, Bilhão 
) , around the world, is quite a rare last name. The surname Bilhão is habitual in Belgium, where it is quite a rare surname, France, and Cameroon, where it is a rare surname. In absolute terms, it most frequently occurs in France, Philippines, and Germany. Much less frequently, Bilhão is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Billion | Philippines, France, Cameroon, Belgium, Germany |
| Bilhão | Brazil |