Cognomen ธนบุรี (ธนบุรี 
, Thanapuri 
, Thonchaiya ) , throughout the world, is a very rare surname. The family name ธนบุรี is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname. Also, ธนบุรี is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ธนบุรี, Thodaeng, Thonchaiya | Thailand |
| Thanapuri | Thailand, India |
Tankronburi, Tattanaburee, Tekonburi, Thanburee, Thansaburup, Thoenburi, Thoenburinth, Thoenkasem, Thonabut, Thoncha, Thonchai, Thonhchai, Thonjareon, Thonkambai, Thonnadee, Thonprathum, and Thonrat