Cognomen Janatham (Janatham 
) , all over the world, is a very rare surname. The family name Janatham is characteristic of Thailand, where it is a very rare surname, and India, where it is an extremely rare surname. Very seldom, Janatham is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Janatham | Brazil, India, Thailand |