Last name Viaji (Bia 
, Viaji 
, Biaha 
) , globally, is a common surname. The family name Viaji is habitual in Romania, where it is quite a rare surname, Algeria, and Cameroon. In absolute terms, the name is most common in Algeria, Indonesia, and India. Likewise, Viaji is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Bia | Portugal, India, Indonesia, Romania, Algeria |
| Viaji | India, United Kingdom, United States, Spain |
| Biaha | Malaysia, United States, South Africa |
| Biahe | Philippines |