Surname Hewawasam (Hewawasam 
) , in all the world, is quite a common last name. The cognomen Hewawasam is characteristic of Sri Lanka, where it is quite a common surname, Qatar, where it is a rare surname, and United Arab Emirates. In absolute terms, this name is the most popular in Sri Lanka, United Arab Emirates, and Indonesia.
| VARIANT | COUNTRY |
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| Hewawasam | Australia, United Arab Emirates, United States, Indonesia, Sri Lanka |
| erandi hewawasam researcher |
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| ruwani p hewawasam researcher (ORCID 0000-0001-6349-4755) |
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| chandana hewawasam researcher |
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| hewawasam patuwatha badathuruge kalindu dulanja ramyasoma researcher |
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| hewawasam bentotage jayasiri researcher |
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| sachin hewawasam cricketer, LK (b. 1994) |
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| h y nevanjee dimanya hewawasam chess player |
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Mr, Dilan, Theja, Nalin, Nimmi, Ishan, Ovini, Ureka, Udaya, Udari, Dayan, Udary, Malani, Miyuru, Sandun, Sanaya, Sankha, Samith, Sajith, Shehan, Suneth, Upali, Kelum, Kasun, Ajith, Ms, Su, Sam, Siri, Anil, Amal, Citf, Desh, Daya, Tony, Indu, Upul, Uvam, Sanka, Saman, Susil, Aloka, Anura, Aruna, Amila, Asiri, Sumith, and Sumudu