Last name Sitham (Sitham 
) , in the entire world, is a rare surname. The cognomen Sitham is habitual in Malaysia, where it is a rare surname, Thailand, where it is a very rare surname, and Australia. Measured by absolute frequency, this name is the most popular in Malaysia, Thailand, and India. Likewise, Sitham is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sitham | Malaysia, Thailand, France, India, Australia |