Last name Gunatilleke (Gunatilleke 
) , around the world, is quite a rare cognomen. The surname Gunatilleke is characteristic of Sri Lanka, where it is quite a common surname, United Arab Emirates, where it is a rare surname, and New Zealand. In absolute terms, the name is most common in Sri Lanka, United Arab Emirates, and the United Kingdom.
| VARIANT | COUNTRY |
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| Gunatilleke | United Arab Emirates, United Kingdom, United States, New Zealand, Sri Lanka |
| c. v. savitri gunatilleke Sri Lankan biologist, LK (b. 1945) |
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| kantha gunatilleke Sri Lankan politician |
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| nimal gunatilleke researcher |
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| damith gunatilleke Sri Lankan cricketer (b. 1983) |
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Mr, Roshani, Godfrey, Thilina, Nadhira, Sharmila, Shenelle, Chandira, Pushpika, Tishnika, Nilanthi, Vimukthi, Agnes Kalutantrige Peiris, Ruwanganie, Mestiyage Don Yomal, Chandra Manel, Raveena, Kolitha, Bhanuka, Anushka, Amar, Gaya, Emma, Ivan, Doris, Tissa, Nimal, Samaraweera K M S, Neela, Ishan, Yomal, Prasad, Lionel, Nayana, Shamila, Sobitha, Indra, and Samaraweera Kms