Surname Biyanwila (Biyanwila 
) , in the entire world, is quite a rare last name. The cognomen Biyanwila is characteristic of Sri Lanka, where it is quite a rare surname, Australia, where it is a very rare surname, and Canada, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Biyanwila | Canada, Australia, United States, United Kingdom, Sri Lanka |
| janaka biyanwila Sri Lankan diver, LK (b. 1965) |
|