Family name ทรายทอง (Saithong 
, ทรายทอง , Saitong 
) , all over the world, is quite a common surname. The family name ทรายทอง is habitual in Thailand, where it is quite a rare surname, Laos, and Slovakia, where it is a rare surname. Measured by absolute frequency, it is the most numerous in South-eastern Asia, particularly Thailand, Laos, and Myanmar. Also, ทรายทอง is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Saithong | Laos, Thailand, United States, Myanmar, Slovakia |
| ทรายทอง, Saithoung | Thailand |
| Saitong | Malaysia, Thailand, United States, India, Myanmar |
Caiythong, Golden Sand, Saiethong, Saingthong, Sainthong, Sairthong, Saithaong, Saithongkhum, Saitthong, and Saiyaithong