Cognomen Tohseng (Tohseng 
) , globally, is a very rare surname. The family name Tohseng is habitual in South-eastern Asia, particularly Malaysia, where it is a rare surname, and Thailand, where it is a very rare surname. Much less frequently, Tohseng is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Tohseng | China, Malaysia, United States, Thailand |