Family name Dahanayake (Dahanayake 
) , throughout the world, is a common surname. The last name Dahanayake is characteristic of Sri Lanka, where it is quite a common surname, United Arab Emirates, where it is a rare surname, and Australia.
| VARIANT | COUNTRY |
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| Dahanayake | United Kingdom, Australia, United States, Sri Lanka, United Arab Emirates |
| charles dahanayake Sri Lankan academic, LK (b. 1928) |
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| dulangi maneksha amerasinghe dahanayake researcher |
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| pasan s dahanayake researcher |
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| subodha dahanayake Sri Lankan badminton player, LK (b. 1990) |
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| isara banidu dahanayake chess player |
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Mr, Rinsy, Risin, Dilan, Gayan, Linda, Joyce, Teeta, Tilak, Nanda, Rohan, Nadee, Nuwan, Ereka, Hemal, Hiran, Isuru, Isuri, Imali, Upali, Manori, Nalin, Randi, Pasan, Kasun, Mali, Siri, Kami, Gaya, Luca, Jude, Niro, Neli, Indu, Upul, Malin, Sahan, Sunil, Supun, Anura, Amila, Ashan, Akila, Ajith, Chris, Kamal, Malaka, and Malani