Family name Irudayaraj (Irudayaraj 
) , across the world, is a rare surname. The cognomen Irudayaraj is habitual in United Arab Emirates, where it is a rare surname, Singapore, and Australia. In absolute terms, it most frequently occurs in India, Australia, and Malaysia. Likewise, Irudayaraj is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Irudayaraj | Australia, United Arab Emirates, United States, India, Malaysia |
| joseph anthony irudayaraj Indian priest and bishop (1935-2019), IN (b. 1935) |
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| xavier irudayaraj (b. 1941) |
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| joseph irudayaraj biological engineer, chemist (b. 1961) |
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| inigo s. irudayaraj Indian Politician |
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| joseph irudayaraj researcher |
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| dominic s. irudayaraj |
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