Family name Chellappan (Chellappan 
) , around the globe, is quite a common last name. The family name Chellappan is characteristic of United Arab Emirates, where it is quite a rare surname, Oman, and Malaysia. In absolute terms, it is commonest in India, Malaysia, and United Arab Emirates. More frequently, Chellappan is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Chellappan | United Arab Emirates, Malaysia, Oman, India, Saudi Arabia |
| kottayam chellappan Malayalam film actor (1923-1971) (b. 1923) |
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| srikumar chellappan researcher (ORCID 0000-0003-1216-2966) |
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| vijila chellappan researcher ORCID ID = 0000-0002-1012-3616 |
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| vanniyarajan chellappan Ph.D. Indian Institute of Technology, Madras 2014 |
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| dinesh kumar chellappan researcher (ORCID 0000-0002-0013-8662) |
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| preeti chellappan Indian businessperson (born 1980, child of Chellappan Kunjan), IN (b. 1980) |
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| dinesh kumar chellappan researcher (ORCID 0000-0001-5567-6663) |
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| biju vadakkemukadiyil chellappan researcher (ORCID 0000-0001-6737-9463) |
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| anand chellappan researcher |
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| selvaraju chellappan researcher |
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| kalaivani chellappan researcher |
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Mani, Meyyappan, Sasikumar, Somarajan, Chettiyar, Karuppiah, Rajendran, Doraisamy, Narayanan, Natarajan, Veeresekaran, Meenambika, Murugappan, Srinivasan, Kaliyappan, Subramanian, Palaniappan, Vattukulathil Kunjan, Vijayakumar, Veerasekaran, Praveen Rajneesh, Radhakrishnan, Nallayan, Sundaravathanan, Govindan, Chettyar, Babu, Raju, Nair, Shaji, Asari, Ahila, Kumar, Pilla, Plala, Ranee, Jeyan, Nadar, Nayar, Venba, Sankar, Ashari, Achari, Achary, Pilala, Pillai, Chettiar, Ramasamy, and Thirunavukkarasu