Family name Dharmasiri (Dharmasiri 
) , in the world, is quite a common cognomen. The family name Dharmasiri is characteristic of Sri Lanka, where it is quite a common surname, Qatar, where it is a rare surname, and Rwanda. Not in comparison with a country's population, it is commonest in Sri Lanka, Rwanda, and Indonesia. Very seldom, Dharmasiri is the forename as well as the last name.
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| Dharmasiri | United Arab Emirates, Rwanda, Indonesia, Sri Lanka, Saudi Arabia |
| dharmasiri senanayake Sri Lankan politician (1933-2000), LK (b. 1933) |
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| dharmasiri weerakoon Sri Lankan boxer, LK (b. 1938) |
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| nihal dharmasiri plant molecular biologist |
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| dharmasiri dassanayake Sri Lankan politician, LK |
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| sunethra dharmasiri researcher (ORCID 0000-0002-8626-5426) |
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| dharshani dharmasiri Sri Lankan cricketer, LK (b. 1986) |
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| dhanushka dharmasiri Sri Lankan cricketer, LK (b. 1992) |
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