Surname Amarasiri (Amarasiri 
) , across the world, is quite a rare family name. The last name Amarasiri is characteristic of Sri Lanka, where it is quite a common surname, Australia, where it is a very rare surname, and Malaysia. In absolute terms, it is the most numerous in Sri Lanka, Australia, and China. Very seldom, Amarasiri is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Amarasiri | Australia, United States, Sri Lanka, Malaysia, China |
| amarasiri kalansuriya Sri Lankan actor, LK (b. 1940) |
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| amarasiri peiris Sri Lankan singer (born 1946) (b. 1946) |
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| mohan amarasiri researcher |
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| w a d l amarasiri researcher (ORCID 0000-0002-8727-691X) |
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| aloka amarasiri Sri Lankan cricketer, LK (b. 1987) |
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