Family name Jantsan (Jantsan 
) , across the world, is a rare last name. The last name Jantsan is characteristic of Mongolia, where it is quite a rare surname, Turkey, where it is an extremely rare surname, and the United States. Very seldom, Jantsan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Jantsan | Mongolia, United States, Turkey, China |