Surname Ethiraj (Ethiraj 
) , across the world, is quite a rare family name. The cognomen Ethiraj is habitual in United Arab Emirates, where it is quite a rare surname, Qatar, where it is a rare surname, and Malaysia. Measured by absolute frequency, it is the most numerous in India, United Arab Emirates, and Malaysia. Also, Ethiraj is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Ethiraj | United Arab Emirates, United States, India, Malaysia, Saudi Arabia |
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v. l. ethiraj Indian philanthropist, IN (b. 1890) |
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| d. ethiraj Indian footballer, IN (b. 1934) |
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| jayashree ethiraj researcher |
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| govindraj ethiraj Indian journalist |
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| dillibabu ethiraj researcher (ORCID 0000-0002-4892-1939) |
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