Cognomen Senanayake (Senanayake 
) , worldwide, is a common last name. The surname Senanayake is characteristic of Sri Lanka, where it is a common surname, Maldives, where it is quite a common surname, and Brunei, where it is quite a rare surname. In absolute terms, it is commonest in Sri Lanka, United Arab Emirates, and Australia. Very seldom, Senanayake is the forename as well as the last name.
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| Senanayake | Australia, Indonesia, United Arab Emirates, Sri Lanka, United States |
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e. l. senanayake Sri Lankan politician (1920-2000), LK (b. 1920) |
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| fredrick richard senanayake Sri Lankan politician, LK (b. 1882) |
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| florence senanayake Sri Lankan politician, LK (b. 1903) |
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| richard gotabhaya senanayake Sri Lankan politician, LK (b. 1911) |
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wasantha senanayake Sri Lankan politician, LK (b. 1973) |
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| stanley senanayake LK (b. 1917) |
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mollie dunuwila senanayake |
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| rukman senanayake Sri Lankan politician, LK (b. 1948) |
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| senaka senanayake (b. 1951) |
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| jayani senanayake Sri Lankan actress, LK (b. 1974) |
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| nimal senanayake Sri Lankan physician |
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| hemantha senanayake researcher |
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| senanayake a m kularatne researcher |
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| kesera senanayake Sri Lankan diplomat, politician and the current Mayor of Kandy |
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| tharindu senanayake researcher |
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