Family name โตทองสุข (โตทองสุข 
, Tothongsook , Tothongsuk ) , throughout the world, is a very rare last name. The surname โตทองสุข is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| โตทองสุข, Tothongsuk, Tothongsook | Thailand |