Surname สุวรรญา (Suwanya 
, Suvanya 
, สุวรรญา ) , worldwide, is a very rare last name. The family name สุวรรญา is habitual in Thailand, where it is a very rare surname, and India, where it is an extremely rare surname. More prevalently, สุวรรญา is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Suwanya | United States, Brazil, Thailand |
| Suvanya | South Africa, Italy, Malaysia, Thailand, India |
| สุวรรญา | Thailand |