Family name Karunanithy (Karunanithy 
) , in the entire world, is quite a rare surname. The last name Karunanithy is characteristic of Sri Lanka, where it is quite a rare surname, Malaysia, and Singapore, where it is a rare surname. In absolute terms, it is the most numerous in Sri Lanka, Malaysia, and Indonesia. Likewise, Karunanithy is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Karunanithy | United Kingdom, Sri Lanka, Indonesia, Malaysia, India |
| narayan karunanithy researcher (ORCID 0000-0002-7527-9304) |
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| narayan karunanithy researcher ORCID 0000-0003-0213-1402 |
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| gogulan karunanithy researcher ORCID ID = 0000-0002-8072-5911 |
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