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