In the entire world, รณธัช (รณธัช 
) is a very rare male given name. The first name รณธัช is habitual in South-eastern Asia, particularly Thailand, where it is a very rare masculine name.
| VARIANT | COUNTRY |
|---|---|
| รณธัช | Thailand |
จันทสูตร, เนืองวรรณะ, and แสนโยธะกะ