Last name Sundararajan (Sundararajan 
) , worldwide, is quite a common cognomen. The last name Sundararajan is characteristic of Oman, where it is quite a rare surname, United Arab Emirates, and Singapore. Measured by absolute frequency, it is commonest in India, the United States, and Malaysia. Likewise, Sundararajan is the forename as well as the last name.
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| Sundararajan | Sri Lanka, United Arab Emirates, India, Malaysia, United States |
| n. s. sundararajan Indian politician (1909-1984), IN (b. 1909) |
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srikanth sundararajan Indian innovator, entrepreneur, professor, and investor., IN (b. 1961) |
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arun sundararajan economist and academic, IN (b. 1971) |
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aruna sundararajan Indian IAS officer, IN |
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| sundararajan krishna cricketer (1938-2013), IN (b. 1938) |
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| t p sundararajan Indian lawyer, IN (b. 1941) |
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| mittur swaminathan sundararajan Indian businessperson (born 1950, child of Mittur Swaminathan Venkataseshaiyer), IN (b. 1950) |
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| gowtham sundararajan Indian actor, IN (b. 1969) |
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| sundararajan madihally researcher |
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| lakshmi sundararajan researcher (ORCID 0000-0003-0735-6627) |
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| raji sundararajan researcher |
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| lakshminarayanan ezhai sundararajan Ph.D. 1986 |
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| s. sundararajan Indian Politician |
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| karthik sundararajan researcher |
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| devaki sundararajan researcher ORCID ID = 0000-0001-6898-5449 |
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