Globally, Vaithianathan (Vaithianathan 
) is a rare boy's given name. The forename Vaithianathan is characteristic of Southern Asia, particularly India, where it is a very rare masculine name. Also, Vaithianathan is the last name as well as the forename.
| VARIANT | COUNTRY |
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| Vaithianathan | Malaysia, Singapore, India, United Kingdom, United States |
| vaithianathan venkatasubramanian electrical engineer in Washington, US |
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| vaithianathan gnanasundaram researcher |
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| vaithianathan venkatasubramanian Ph.D. Washington University in St. Louis 1992 |
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