Surname Biljoen (Biljoen 
) , throughout the world, is a very rare last name. The surname Biljoen is habitual in South Africa, where it is a rare surname, Netherlands, where it is a very rare surname, and Australia.
| VARIANT | COUNTRY |
|---|---|
| Biljoen | Australia, Netherlands, South Africa |
| george johan baron van weede heer van biljoen, walenburg, balgoy en keent (1627-1696) (b. 1627) |
|