Last name Juac (Juac 
) , around the globe, is a rare surname. The cognomen Juac is characteristic of South Sudan, where it is quite a rare surname, Peru, where it is an extremely rare surname, and the United States. Very seldom, Juac is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Juac | Peru, United States, South Sudan, Philippines |