Family name Буйац (Buiac 
, Bujac 
, Буйац 
) , worldwide, is quite a rare last name. The surname Буйац is characteristic of Moldova, where it is quite a common surname, Romania, where it is quite a rare surname, and Portugal, where it is a rare surname. In absolute terms, it is the most numerous in Moldova, Romania, and Japan. Very seldom, Буйац is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Buiac | Spain, United Kingdom, Romania, United States, Germany |
| Bujac | Moldova, Spain, Romania, Japan, Italy |
| Буйац | Russia |