Cognomen Durairaj (Durairaj 
) , around the globe, is quite a common surname. The cognomen Durairaj is habitual in Sri Lanka, where it is quite a rare surname, United Arab Emirates, and Qatar. In absolute terms, it is commonest in India, Sri Lanka, and Malaysia. Much less frequently, Durairaj is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Durairaj | United Arab Emirates, Malaysia, India, United States, Sri Lanka |
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t. s. durairaj Indian actor, IN (b. 1910) |
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| c. durairaj Indian politician, IN (b. 1901) |
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nandha durairaj Indian actor, IN (b. 1985) |
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| arockia sebastian durairaj Indian priest, IN (b. 1957) |
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| durairaj arunprasad Indian businessperson (born 1970, child of Durairaj Manickam), IN (b. 1970) |
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| manoj durairaj Indian heart transplant surgeon (born 1971) (b. 1971) |
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| anitha durairaj researcher (ORCID 0000-0002-1043-6145) |
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| durairaj segamalai researcher |
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| p. durairaj botanist |
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| pradeepraj durairaj researcher |
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| elantamilan durairaj researcher |
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| durairaj r researcher |
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| rajesh durairaj researcher ORCID ID = 0000-0002-3807-4174 |
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| chandrasekar durairaj researcher |
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| p. durairaj Indian politician, IN |
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