Worldwide, Gayan (Gayan 
, Гаян 
) is a common primarily masculine, but very seldom girly forename. The forename Gayan is characteristic of Sri Lanka, where it is a common boy's name, Maldives, where it is quite a common boy's name, and Qatar. In absolute terms, it is the most numerous in Southern Asia, particularly Sri Lanka, India, and Pakistan. Very seldom, Gayan is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Gayan | Pakistan, Sri Lanka, Philippines, United Arab Emirates, India |
| Гаян | Kazakhstan, Ukraine, Kyrgyzstan, Russia, Armenia |
| gayan b wijeratne researcher |
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| gayan meegama Computer Scientist |
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| gayan rubasinghege researcher |
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| gayan bowatte researcher |
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| gayan premaratne researcher |
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| gayan chand Indian politician, IN |
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| gayan k wijesinghe researcher |
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| gayan mirihana arachchilage researcher (ORCID 0000-0001-9742-5977) |
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| gayan surendra researcher |
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| gayan shanaka abeynanda Ph.D. Louisiana State University 2016 |
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| gayan abeysinghe researcher |
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| gayan a abeykoon researcher |
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| gayan i balasooriya researcher |
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| gayan sirisoma Sri Lankan cricketer, LK (b. 1981) |
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| gayan de silva Sri Lankan cricketer born 1 December 1988, LK (b. 1988) |
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