Surname ธรัญญา (Taranya 
, ธรัญญา , Tharunya 
) , around the globe, is a rare last name. The family name ธรัญญา is habitual in Sri Lanka, where it is a rare surname, Malaysia, where it is a very rare surname, and India, where it is an extremely rare surname. More prevalently, ธรัญญา is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Taranya | Indonesia, Malaysia, Nigeria, Thailand, India |
| ธรัญญา | Thailand |
| Tharunya | Sri Lanka, Malaysia, Thailand, United States, India |