Family name Premathilake (Premathilake 
) , globally, is quite a rare cognomen. The surname Premathilake is habitual in Sri Lanka, where it is quite a common surname, Australia, where it is a very rare surname, and Indonesia. Very seldom, Premathilake is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Premathilake | Australia, New Zealand, United States, Indonesia, Sri Lanka |
| hasitha premathilake researcher, ORCID id # 0000-0002-7469-790X |
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| ishara p premathilake researcher (ORCID 0000-0002-0083-6145) |
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| malith premathilake cricketer, LK (b. 1997) |
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Kumi, Amitha, Asanka, Achira, Ruwani, Dewaka, Damith, Gamini, Lalith, Lahiru, Jagath, Nisala, Nimsha, Eranda, Harsha, Hemali, Vindya, Indika, Ishara, Sajitha, Shehara, Chaniya, Amasha, Ananda, Sugath, Sajith, Tony, Malka, Mohan, Saman, Sunil, Susil, Anoma, Aruna, Amila, Dasun, Chamara, Gehan, Nadie, Nimal, Nushi, Nuwan, Viraj, Inoka, Madura, Sanath, Sankha, Sachin, Gihan, and Kavindu