Cognomen Karunanayake (Karunanayake 
) , in the entire world, is a common last name. The last name Karunanayake is habitual in 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, Australia, and Japan. Much less frequently, Karunanayake is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Karunanayake | Australia, Indonesia, Sri Lanka, United Arab Emirates, Japan |
| chandima karunanayake researcher |
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| panduka karunanayake researcher |
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| nethmi karunanayake New Zealand actor |
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| amaranath karunanayake researcher ORCID ID = 0000-0001-5836-6329 |
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| aranjan karunanayake researcher |
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| lilani karunanayake researcher |
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| aranjan lionel karunanayake researcher |
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| shalika karunanayake Sri Lankan cricketer, LK (b. 1987) |
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| nipun karunanayake Sri Lankan cricketer, LK (b. 1991) |
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Mr, Ariya, Aruni, Amali, Amila, Asiri, Asoka, Ayomi, Chaya, Kamal, Anupa, Kasun, Ranga, Rohan, Ruwan, Dilan, Dilmi, Dulmi, Gayan, Gihan, Lanka, Keith, Sumal, Supun, Sunil, Ama, Don, Jin, Mala, Sean, Anne, Anil, Ravi, Dona, Dhar, Gaya, Nima, Esha, Eric, Hugh, Indu, Yash, Upul, Saman, Sajiv, Sisil, Tilan, and Nanda