Last name ตวย (ตวย 
, Tuai 
) , worldwide, is a rare family name. The family name ตวย is characteristic of Malaysia, where it is a rare surname, New Zealand, and Myanmar. In absolute terms, the name is most common in South-eastern Asia, particularly Malaysia, Indonesia, and Myanmar. Also, ตวย is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ตวย | Thailand |
| Tuai | Indonesia, Malaysia, United States, India, Myanmar |