Cognomen Janluan (Janluan 
) , in the world, is a very rare family name. The family name Janluan is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Janluan | Thailand |
Sombat, Wittaya, Jullajan, Warisara, and Viwatthana