Last name Samarasinghe (Samarasinghe 
) , across the world, is a common surname. The cognomen Samarasinghe is characteristic of Sri Lanka, where it is a common surname, Maldives, where it is quite a common surname, and Qatar, where it is quite a rare surname. Not in comparison with a country's population, the name is most common in Sri Lanka, Australia, and Indonesia.
| VARIANT | COUNTRY |
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| Samarasinghe | United Arab Emirates, United States, Australia, Sri Lanka, Indonesia |
Самарасінгхе, and สมรสิงห์
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thisara samarasinghe Sri Lanka Navy admiral, LK (b. 1954) |
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| g. w. samarasinghe (b. 1916) |
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sandhya samarasinghe New Zealand engineering academic, NZ |
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| nihal samarasinghe Sri Lankan singer and musician (b. 1937) |
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rajee samarasinghe director and filmmaker, LK (b. 1988) |
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| miyuri samarasinghe Sri Lankan actress, LK (b. 1939) |
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| t.m. samarasinghe Sri Lankan cricket umpire (1942-2004), LK (b. 1942) |
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| vithanakande samarasinghe Sri Lankan long-distance runner, LK (b. 1962) |
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| wasantha samarasinghe Sri Lankan politician (b. 1976) |
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| ruchira samarasinghe (b. 1968) |
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| sandith samarasinghe Sri Lankan politician, LK |
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| mendaka samarasinghe Sri Lankan general |
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| hhr samarasinghe physician, LK |
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| thilina samarasinghe researcher |
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| nayani samarasinghe researcher |
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