Surname Sitthidech (Sitthidech 
) , all over the world, is a very rare family name. The surname Sitthidech is habitual in Thailand, where it is a rare surname, Cambodia, where it is a very rare surname, and China, where it is an extremely rare surname. Likewise, Sitthidech is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sitthidech | United States, Thailand, Cambodia, China |