Last name Warnakulasuriya (Warnakulasuriya 
) , throughout the world, is a common cognomen. The surname Warnakulasuriya is characteristic of Sri Lanka, where it is quite a common surname, Italy, where it is quite a rare surname, and Qatar, where it is a rare surname. Measured by absolute frequency, the name is most common in Sri Lanka, Italy, and Bangladesh. Much less frequently, Warnakulasuriya is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Warnakulasuriya | Australia, United Arab Emirates, Bangladesh, Italy, Sri Lanka |
| sumithra warnakulasuriya cricketer, LK (b. 1962) |
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| tania warnakulasuriya researcher |
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| warnakulasuriya m a d b fernando researcher |
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| samantha r warnakulasuriya researcher |
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| warnakulasuriya b n t fernando researcher (ORCID 0000-0002-5063-8649) |
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| buddhika warnakulasuriya Sri Lankan cyclist, LK (b. 1983) |
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| chamari warnakulasuriya (b. 1990) |
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Mr, Milan, Minon, Sanju, Saman, Sahan, Sunil, Sunny, Supun, Smita, Madhu, Anton, Aruna, Amila, Amith, Ashan, Asiri, Asela, Asoka, Akila, Ayomi, Anura, Marie, Maria, Yuki, Sam, Ann, Amy, Roy, Rex, Don, Eng, Mali, Sara, Alex, Anna, Anne, Asen, Rita, Dona, Lowe, Jude, Nadi, Neil, Emma, Evan, Ajith, and Cyril