Family name Sudiam (Sudiam 
) , around the globe, is a very rare surname. The cognomen Sudiam is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname, Indonesia, and Malaysia. Not in comparison with a country's population, it most frequently occurs in South-eastern Asia, particularly Indonesia, Thailand, and Philippines. Very seldom, Sudiam is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sudiam | Indonesia, Philippines, Malaysia, Thailand |