Throughout the world, Viau (비오 
, Viau 
) is an extremely rare unisex first name. Much more prevalently, Viau is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| 비오 | South Korea |
| Viau | Guatemala, Malaysia, United States, Canada, France |
|
lee viau Major League Baseball pitcher (1866-1947), US (b. 1866) |
|