Last name Rattam (Rattam 
) , around the world, is a rare surname. The family name Rattam is characteristic of Thailand, where it is a very rare surname, Indonesia, and the United Kingdom, where it is an extremely rare surname. Not in comparison with a country's population, the name is most common in Indonesia, Thailand, and India. Very seldom, Rattam is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rattam | United Kingdom, United States, India, Thailand, Indonesia |