Cognomen Vaithilingam (Vaithilingam 
) , across the world, is quite a rare surname. The last name Vaithilingam is characteristic of Sri Lanka, where it is quite a rare surname, Malaysia, and Singapore. Not in comparison with a country's population, it is commonest in Malaysia, Sri Lanka, and India. Also, Vaithilingam is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Vaithilingam | Sri Lanka, Malaysia, Singapore, India, Canada |
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v. vaithilingam Indian politician, IN (b. 1950) |
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| vaithilingam nadimuthu pillai IN (b. 1902) |
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| daisy vaithilingam Singaporean social worker, SG (b. 1925) |
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r. vaithilingam Member of the Tamil Nadu legislative assembly, IN |
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| vaithilingam sornalingam Sri Lanakan rebel, LK (b. 1949) |
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| jayasheelan vaithilingam researcher |
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| rathna devi vaithilingam researcher |
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| vaithilingam jeyakumar Ph.D. University of Melbourne 1986 |
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| ve. vaithilingam Indian politician |
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| vijayaganapathy vaithilingam researcher |
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