Last name Athmanathan (Athmanathan 
) , around the globe, is a rare cognomen. The surname Athmanathan is characteristic of Sri Lanka, where it is a rare surname, Singapore, and Malaysia, where it is a very rare surname. Measured by absolute frequency, it is commonest in India, Sri Lanka, and Malaysia. Also, Athmanathan is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Athmanathan | Sri Lanka, India, Singapore, Malaysia, United States |
| m. k. athmanathan tamil Music Composer (b. 1925) |
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| aravinthan athmanathan Ph.D. École Polytechnique Fédérale de Lausanne 2015 |
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| arun athmanathan researcher |
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