Surname Rathnasekara (Rathnasekara 
) , all around the world, is quite a rare family name. The surname Rathnasekara is habitual in Sri Lanka, where it is quite a common surname, and Australia, where it is a very rare surname. Very seldom, Rathnasekara is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rathnasekara | United States, Canada, Australia, Sri Lanka |
Dev, Sanjuni, Saminda, Samudra, Sampath, Sameera, Shanaka, Shihara, Sumedha, Sudeera, S Kanishka, Asantha, Chanaka, Buddika, Kalpani, Rajitha, Lakshan, Laksiri, Leonard, Tharaka, Thilina, Thilini, Sanjaya, Muditha, Indika, Eranga, Ravi, Nero, Shani, Aruni, Rayan, Gayan, Lucky, Nadun, Udesh, Mahesh, Tishara, Mihiri, Suresh, Basuru, Kapila, Kavish, Kushan, Pubudu, Rushan, Lahiru, Nandun, Erandi, Sarath, and Nirasha