Surname Rathna (Rathna 
) , all around the world, is quite a rare last name. The surname Rathna is habitual in Sri Lanka, where it is quite a rare surname, Qatar, and Kuwait. In absolute terms, it is the most numerous in India, Sri Lanka, and Saudi Arabia. More prevalently, Rathna is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rathna | Bangladesh, India, Saudi Arabia, Sri Lanka, Qatar |