In the entire world, Ayyappan (Ayyappan 
) is a common boy's forename. The given name Ayyappan is characteristic of Brunei, where it is quite a common masculine name, Oman, where it is quite a rare predominantly boy's, but very seldom female name, and Bahrain, where it is quite a rare masculine name. In absolute terms, it is the most numerous in India, Saudi Arabia, and United Arab Emirates. Much less frequently, Ayyappan is the last name as well as the forename.
| VARIANT | COUNTRY |
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| Ayyappan | United Arab Emirates, Oman, India, Malaysia, Saudi Arabia |
| ayyappan nair raghavan pillai Indian businessperson (born 1953, child of Raghavan Pillai), IN (b. 1953) |
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| padmanabhan ayyappan Indian businessperson (born 1972, child of Ayyappan), IN (b. 1972) |
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| narayanan ayyappan botanist (b. 1974) |
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| ayyappan sathya researcher |
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| ayyappan chitra researcher (ORCID 0000-0002-9132-9316) |
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| ayyappan sreekumar Ayyappan Sreekumar is an Indian technology entrepreneur and developer from Kollam, Kerala, IN (b. 1988) |
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Raj, Selvaraj, Arumugam, Krishnan, Ramasamy, Narayana, Manoharan, Shanmugam, Chettiyar, Rajagopal, Rajendran, Natarajan, Srinivasan, Karuppayan, Kumarasamy, Ramanathan, Subramanian, Swaminathan, Arunachalam, Subramaniyan, Muthaiah, Ganesan, Ayyappa, Subbiah, Mani, Ayya, Appu, Raja, Nair, Iyer, Muthu, Asari, Kunju, Muruganantham, Kumar, Kutty, Pilla, Raman, Nadar, Nayar, Achari, Kannan, Pillai, Murugan, Kutti, and Balasubramanian