Family name Wimalasiri (Wimalasiri 
) , in all the world, is quite a rare surname. The cognomen Wimalasiri is characteristic of Sri Lanka, where it is quite a common surname, Qatar, where it is a rare surname, and United Arab Emirates. Not in comparison with a country's population, it is commonest in Sri Lanka, United Arab Emirates, and Australia. Much less frequently, Wimalasiri is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Wimalasiri | Saudi Arabia, Australia, Sri Lanka, United Arab Emirates, Qatar |
| wimalasiri de mel (b. 1926) |
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| sanath wimalasiri Sri Lankan actor, LK (b. 1974) |
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| pubudu wimalasiri researcher |
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| apsara wimalasiri Sri Lankan student and activist (died April 2022) |
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Anne, Bhagya, Pamoda, Pubudu, Dulith, Janaka, Thilan, Eranga, Iresha, Wipula, Madhura, Sashika, Sachini, Suranga, Bandula, Bojitha, Padmaja, Padmini, Randika, Ranjith, Athula, Amanda, Suleka, Sineth, Saman, Sahan, Anura, Aruna, Asoka, Akila, Ajith, Kamal, Pearl, Rochana, Rahal, Gayan, Geeth, Gihan, Titus, Udaya, Manuka, Sanath, Sarath, Savini, Rohan, and Deepika