Surname Jacis (Jacis 
) , throughout the world, is a very rare family name. The cognomen Jacis is habitual in Latvia, where it is a rare surname, Malaysia, where it is a very rare surname, and Argentina, where it is an extremely rare surname. Also, Jacis is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Jacis | Brazil, Argentina, Latvia, Malaysia, Philippines |