Last name Ragavan (Ragavan 
) , globally, is quite a common family name. The cognomen Ragavan is habitual in Malaysia, where it is quite a rare surname, United Arab Emirates, and Sri Lanka. Not in comparison with a country's population, this name is the most popular in Malaysia, India, and Sri Lanka. Also, Ragavan is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Ragavan | Malaysia, India, Saudi Arabia, Sri Lanka, United Arab Emirates |
| p. ragavan botanist |
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| maya ragavan researcher |
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| deena ragavan scholar of the literature and religion of the ancient Near East |
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| meera v ragavan researcher |
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| shavania ragavan researcher |
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| p ragavan researcher |
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| nanthiney devi ragavan researcher |
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| ragavan v siddharthan researcher (ORCID 0000-0002-5661-9414) |
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