Cognomen Kariyawasam (Kariyawasam 
) , around the globe, is a common last name. The surname Kariyawasam is characteristic of Sri Lanka, where it is a common surname, Qatar, where it is quite a rare surname, and United Arab Emirates. In absolute terms, it is commonest in Sri Lanka, Australia, and United Arab Emirates. Very seldom, Kariyawasam is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Kariyawasam | Australia, United Arab Emirates, Bangladesh, Saudi Arabia, Sri Lanka |
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pradeep kariyawasam Sri Lankan cricketer, LK |
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| albert kariyawasam (b. 1921) |
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| gayathri kariyawasam Sri Lankan cricketer, LK (b. 1976) |
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| udeshika kariyawasam researcher |
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| champika s kariyawasam researcher |
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| subhashinie kariyawasam researcher (ORCID 0000-0003-2887-7982) |
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| didu s t kariyawasam researcher (ORCID 0000-0002-4176-4010) |
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| anula kariyawasam researcher (ORCID 0000-0003-4405-6367) |
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| viraj kariyawasam researcher (ORCID 0000-0003-2623-1336) |
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| isuru udayanga kariyawasam botanist |
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| imalki kariyawasam researcher |
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| rusiru kariyawasam researcher |
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| kariyawasam majuwana gamage menaka menike kariyawasam researcher (ORCID 0000-0003-4789-9060) |
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| agta kariyawasam researcher |
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| lasith s kariyawasam researcher (ORCID 0000-0002-8358-5643) |
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Mr, Sanka, Salya, Saman, Sahan, Savan, Sunil, Supun, Senal, Anath, Anura, Aruna, Aruni, Amali, Amila, Asela, Asoka, Akila, Akesh, Ajith, Manju, Chani, Manoj, Olga, Ms, Su, Ari, Lal, Mark, Anju, Amal, Asha, Chip, Bbus, Pras, Rupa, Gaya, Lili, Janu, Jess, Fcis, Indu, Isha, Upul, and Chams