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 | United Kingdom, Germany, Spain, United States, Romania |
| Bujac | Italy, Spain, Japan, Romania, Moldova |
| Буйац | Russia |