Cognomen Rajawardana (Rajawardana 
) , all over the world, is a rare surname. The family name Rajawardana is characteristic of Sri Lanka, where it is a rare surname, and the United Kingdom, where it is an extremely rare surname. Much less frequently, Rajawardana is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rajawardana | United Kingdom, India, Sri Lanka |