Surname Rojsak (Rojsak 
) , in the entire world, is an extremely rare cognomen. Much more prevalently, Rojsak is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rojsak | Thailand |
Chompoo, Pengwong, Dangpirom, Tamsiri, Naipong, Chinakul, Naipongsri, Yodsurin, Khunniranon, and Kitinartintranee