Last name ธนสิริ (Dhanasiri 
, ธนสิริ , Dhonsiri ) , all around the world, is a rare surname. The family name ธนสิริ is habitual in Thailand, where it is a very rare surname, India, and the United Kingdom, where it is an extremely rare surname. Also, ธนสิริ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Dhanasiri | Sri Lanka, United Kingdom, India, Thailand, United States |
| ธนสิริ | Thailand |
| Dhonsiri | India |