Surname Tharaka (Tharaka 
) , in all the world, is a common cognomen. The surname Tharaka is habitual in Sri Lanka, where it is quite a common surname, Qatar, where it is quite a rare surname, and Kuwait. Measured by absolute frequency, it is commonest in Sri Lanka, India, and United Arab Emirates. Also, Tharaka is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Tharaka | Saudi Arabia, India, United Arab Emirates, Sri Lanka, Qatar |
| shalani tharaka Sri Lankan actress, Model and Dancer, LK (b. 1990) |
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| nisala tharaka Sri Lankan cricketer, LK (b. 1991) |
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| gayan tharaka cricketer, LK (b. 1992) |
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| dilip tharaka cricketer, LK (b. 1996) |
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