Cognomen Jayasundera (Jayasundera 
) , in the world, is quite a common last name. The surname Jayasundera is habitual in Sri Lanka, where it is quite a common surname, Bahrain, where it is quite a rare surname, and United Arab Emirates, where it is a rare surname. Not in comparison with a country's population, the name is most common in Sri Lanka, United Arab Emirates, and Australia.
| VARIANT | COUNTRY |
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| Jayasundera | United Kingdom, Australia, Sri Lanka, United States, United Arab Emirates |
| don jayasundera cricketer (1911-1964), LK (b. 1911) |
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| t. b. jayasundera (b. 1927) |
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| ivan tilak jayasundera Roman Catholic clergyman (b. 1959) |
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| ivan tilak jayasundera LK (b. 1959) |
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| thusitha jayasundera Sri Lankan actress, LK (b. 1971) |
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| romesh jayasundera researcher (ORCID 0000-0003-4826-2133) |
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| p. b. jayasundera Sri Lankan economist |
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| praneth jayasundera cricketer, LK (b. 1980) |
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| krishanthi p jayasundera researcher ORCID ID = 0000-0001-9523-3875 |
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| kanishka t jayasundera researcher |
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| udara jayasundera Sri Lankan cricketer, LK (b. 1991) |
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| akila jayasundera cricketer, LK (b. 1992) |
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Mr, Laith, Leena, James, Nirma, Erica, Hiran, Ymitri, Upali, Menaka, Gihan, Sashen, Sajith, Shammi, Shehan, Surani, Sunith, Sujith, Sonali, Andrew, Arosha, Sagara, Amalka, Devin, Ranil, Ms, Sam, Sri, Jan, Mark, Anil, Rani, Ravi, Nina, Rohan, Upul, Mandu, Mohan, Shyam, Sunil, Anira, Anoma, Ajith, Kasun, Kusum, Mario, and Adrian