Surname Changtum (Changtum 
) , around the globe, is a very rare family name. The last name Changtum is characteristic of Thailand, where it is a very rare surname, and the United States, where it is an extremely rare surname. Much less frequently, Changtum is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Changtum | India, United States, Thailand |