Cognomen Ulaganathan (Ulaganathan 
) , around the globe, is quite a rare last name. The surname Ulaganathan is habitual in Malaysia, where it is quite a rare surname, Singapore, and Sri Lanka. Not in comparison with a country's population, it most frequently occurs in India, Malaysia, and Sri Lanka. Also, Ulaganathan is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Ulaganathan | Sri Lanka, India, Singapore, Malaysia, Saudi Arabia |
| narayanswami ulaganathan Indian footballer, IN (b. 1952) |
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| venkatasubramanian ulaganathan researcher |
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| k. ulaganathan Indian politician, IN |
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| vijay kumar ulaganathan researcher |
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| i. ulaganathan Malaysian-born poet who arrived in Singapore in 1953 |
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| sekar ulaganathan researcher |
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| rajesh k ulaganathan researcher (ORCID 0000-0001-8886-6332) |
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| thirumalaiselvi ulaganathan researcher |
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| vamseekrishna ulaganathan researcher ORCID ID = 0000-0002-6791-9535 |
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| manikandan ulaganathan Indian businessperson (born 1984, child of Ulaganathan Paramasivam), IN (b. 1984) |
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| meera ulaganathan |
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