Family name โทง (Thong 
, โทง 
) , around the world, is a common cognomen. The last name โทง is characteristic of South-eastern Asia, particularly Malaysia, where it is quite a common surname, Singapore, and Laos. In absolute terms, it is the most numerous in South-eastern Asia, particularly Malaysia, Vietnam, and Indonesia. Likewise, โทง is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Thong | Vietnam, Singapore, Laos, Indonesia, Malaysia |
| โทง | Thailand |