Last name ตอวงศ์ (ตอวงศ์ 
) , across the world, is a rare surname. The family name ตอวงศ์ is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname. Likewise, ตอวงศ์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ตอวงศ์ | Thailand |