Cognomen Chellam (Chellam 
) , globally, is quite a rare surname. The cognomen Chellam is habitual in Western Asia, particularly Oman, where it is quite a rare surname, Qatar, and United Arab Emirates. Not in comparison with a country's population, it is commonest in India, Malaysia, and United Arab Emirates. Also, Chellam is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Chellam | Malaysia, Saudi Arabia, India, United Arab Emirates, Oman |
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k. r. chellam Indian actress who appeared in Tamil language films |
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| raju chellam Executive in the information and communication technology industry who has written two novels, including Organ Gold, a medical thriller |
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| jaynthy chellam researcher |
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| shankararaman chellam researcher |
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| ravi chellam researcher |
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| shrividya chellam researcher (ORCID 0000-0001-5426-3939) |
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