Throughout the world, Dharmarathna (Dharmarathna 
) is a rare boy's forename. The first name Dharmarathna is habitual in Southern Asia, particularly Sri Lanka, where it is a rare masculine name. Also, Dharmarathna is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Dharmarathna | United Arab Emirates, Singapore, United States, India, Sri Lanka |