Cognomen Janthani (Janthani 
) , around the world, is a very rare last name. The family name Janthani is habitual in Thailand, where it is a very rare surname, and India, where it is an extremely rare surname. Much less frequently, Janthani is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Janthani | India, Thailand |