Surname Uthiam (Uthiam 
) , all over the world, is a very rare family name. The last name Uthiam is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Very seldom, Uthiam is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Uthiam | India, Thailand |
Khwanklao, Nattaporn, and Natthapong