Last name ธัญสิประเสริฐ (ธัญสิประเสริฐ 
) , around the world, is an extremely rare cognomen. The cognomen ธัญสิประเสริฐ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| ธัญสิประเสริฐ | Thailand |