Family name ทองสร้อย (Thongso 
, Thongsoi , Thongsoy ) , in the world, is a rare cognomen. The last name ทองสร้อย is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname. Much less frequently, ทองสร้อย is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Thongso | Thailand, India, United States |
| Thongsoi | Thailand, India |
| Thongsoy | Thailand, United States |
Thongloa, Thongsau, Thongshuay, Thongsoang, Thongsoiy, Thongsoox, Thongsouan, Thongsroi, and Thongthaow