Family name Wijenayake (Wijenayake 
) , in the world, is quite a common cognomen. The last name Wijenayake is habitual in Sri Lanka, where it is quite a common surname, Qatar, 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, Indonesia, and Australia.
| VARIANT | COUNTRY |
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| Wijenayake | Australia, United Arab Emirates, United States, Indonesia, Sri Lanka |
| piyumini wijenayake researcher (accounting & data analytics) |
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| sanoji wijenayake researcher |
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| piyasiri wijenayake Sri Lankan politician, LK |
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| tharake wijenayake Ph.D. University of Texas at Dallas 2016 |
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| kemira wijenayake Sri Lankan cricketer |
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Ann, Kasun, Percy, Roman, Ruwan, Devni, Dewmi, Dilip, Disna, Gayan, Chami, Tiron, Hansi, Isuru, Wimal, Wemil, Udaya, Upeka, Upuli, Manuja, Malith, Nuwan, Ajith, Asith, Asiri, Dan, Lal, Eva, Mike, Amal, Ravi, Lisa, John, Judy, Navi, Esha, Vinu, Upul, Marie, Malin, Saman, Sahan, Supun, Anton, Anika, Ashan, Mahesh, and Sandun