Throughout the world, Chellappa (Chellappa 
) is a rare predominantly boy's, but very seldom feminine forename. The forename Chellappa is characteristic of Saudi Arabia, where it is a very rare boy's name, and India, where it is a very rare predominantly male, but very seldom female name. Also, Chellappa is the last name as well as the forename.
| VARIANT | COUNTRY |
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| Chellappa | Israel, United Arab Emirates, India, Malaysia, United States |
| madhan mohan chellappa researcher ORCID ID = 0000-0003-0477-6829 |
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| natarajan chellappa researcher (ORCID 0000-0003-4052-3319) |
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| ramalingam chellappa Ph.D. Purdue University 1981 |
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| ramnath k. chellappa Ph.D. University of Texas at Austin 1997 |
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