Cognomen Rajapakse (Rajapakse 
) , globally, is a common last name. The family name Rajapakse is characteristic of Sri Lanka, where it is a common surname, Maldives, where it is quite a rare surname, and United Arab Emirates. Measured by absolute frequency, the name is most common in Sri Lanka, Australia, and United Arab Emirates.
| VARIANT | COUNTRY |
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| Rajapakse | Australia, United Arab Emirates, United States, Sri Lanka, Japan |
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lalitha rajapakse Sri Lankan politician, LK (b. 1900) |
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| wilfred martin rajapakse ceylonese politician (b. 1864) |
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| a. e. rajapakse (b. 1866) |
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| don roy rajapakse (b. 1905) |
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| leticia rajapakse (b. 1920) |
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| r. r. w. rajapakse (b. 1924) |
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| kingsley rajapakse Sri Lankan filmmaker and actor (1934–1983) (b. 1934) |
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| dammika rajapakse Sri Lankan cricketer (b. 1971) |
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| ajith rajapakse Sri Lankan politician (b. 1974) |
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| jayantha rajapakse researcher (computer science & information technology) |
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| vinodh n. rajapakse Ph.D. University of Maryland College Park 2013 |
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| thilini rajapakse researcher |
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| r m g rajapakse researcher |
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| rajapakse mudiyanselage sumudu himesha bandara medawela researcher |
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| r p v jayanthe rajapakse researcher (ORCID 0000-0002-3929-3416) |
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