Around the globe, Thilanka (Thilanka 
) is quite a rare epicene given name. The first name Thilanka is habitual in Sri Lanka, where it is quite a common epicene name, Qatar, where it is a rare masculine name, and United Arab Emirates. Measured by absolute frequency, it is the most numerous in Sri Lanka, South Korea, and United Arab Emirates. Very seldom, Thilanka is the last name as well as the forename.
| VARIANT | COUNTRY |
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| Thilanka | Sri Lanka, Australia, United Arab Emirates, Qatar, South Korea |
| thilanka iresh arachchi appuhamillage Ph.D. Oregon State University 2011 |
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| thilanka ranaweera researcher |
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| thilanka palangasinghe Sri Lankan weightlifter, LK (b. 1993) |
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| thilanka rathnayake Sri Lankan social media strategist (b. 1995) |
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| thilanka de silva Sri Lankan cricketer (b. 1997) |
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