Family name สัตย์จา (สัตย์จา 
) , in the world, is an extremely rare surname. The last name สัตย์จา is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname. More prevalently, สัตย์จา is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| สัตย์จา | Thailand |
สิงสุข, and ทรัพย์เอนก