Surname Biyam (Biyam 
) , across the world, is a rare last name. The last name Biyam is characteristic of Sub-Saharan Africa, particularly Zimbabwe, where it is quite a rare surname, South Africa, where it is a very rare surname, and Nigeria. In absolute terms, it is the most numerous in Zimbabwe, India, and Nigeria. Also, Biyam is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Biyam | Tanzania, South Africa, India, Zimbabwe, Nigeria |