Family name ธวัชเมตตาชัย (ธวัชเมตตาชัย 
) , all around the world, is an extremely rare cognomen. The family name ธวัชเมตตาชัย is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| ธวัชเมตตาชัย | Thailand |