Last name ทองสาน (ทองสาน 
, Thongsan 
) , globally, is a rare cognomen. The cognomen ทองสาน is characteristic of Thailand, where it is quite a rare surname, Malaysia, where it is a very rare surname, and the United States, where it is an extremely rare surname. Much less frequently, ทองสาน is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ทองสาน | Thailand |
| Thongsan | Malaysia, United States, Thailand |