Family name Busac (Busac 
) , across the world, is a very rare surname. The family name Busac is habitual in Croatia, where it is a very rare surname, Morocco, and France. Much less frequently, Busac is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Busac | Morocco, Philippines, Croatia, India, France |
| william busac Peerage person ID=104790 (b. 1020) |
|