Surname Amarasinghe (Amarasinghe 
, อมรสิงห์ 
) , around the world, is a common family name. The family name Amarasinghe 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, it most frequently occurs in Sri Lanka, United Arab Emirates, and Indonesia. Very seldom, Amarasinghe is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Amarasinghe | Indonesia, United Arab Emirates, Sri Lanka, Australia, United States |
| อมรสิงห์ | Thailand |
| samson felix amarasinghe Sri Lankan civil servant (b. 1902) |
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rohan amarasinghe Sri Lankan rear admiral, LK (b. 1959) |
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| sumana amarasinghe Sri Lankan actress, LK (b. 1948) |
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| chamara j. amarasinghe biologist |
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| upali s. amarasinghe researcher |
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| prabha rajini amarasinghe Sri Lankan botanist |
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| upali ananda amarasinghe Ph.D. University of Illinois at Urbana-Champaign 1991 |
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| anura amarasinghe researcher ORCID ID = 0000-0002-6137-9320 |
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| sivarathy amarasinghe researcher |
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| ashwini amarasinghe Ph.D. University of Florida 2017 |
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| ovini amarasinghe researcher |
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| isuru amarasinghe researcher (ORCID 0000-0003-0342-3984) |
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| deepika amarasinghe researcher (ORCID 0000-0001-7727-1843) |
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| r. amarasinghe researcher |
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| chandika amarasinghe researcher |
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