Cognomen Santra (Santra 
) , across the world, is a widespread surname. The cognomen Santra is habitual in India, where it is quite a common surname, Bahrain, where it is quite a rare surname, and United Arab Emirates. Measured by absolute frequency, the name is most common in India, Indonesia, and Saudi Arabia. Much less frequently, Santra is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Santra | Saudi Arabia, Greece, India, United Arab Emirates, Indonesia |
| appius maximus santra (b. 50) |
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| isaac santra Indian physician (1892-1968), IN (b. 1892) |
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| gangadhar santra (b. 1939) |
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| kamalakanta santra Indian weightlifter (b. 1960) |
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| s.c. santra botanist |
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| sumita santra researcher |
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| krishna chandra santra Indian politician, IN |
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| tuhin subhra santra researcher (ORCID 0000-0002-9403-2155) |
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| santra brenna researcher |
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| sanjiban santra Ph.D. Indian Institute of Science 2006 |
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| sourav santra Ph.D. Northern Illinois University 2007 |
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| manasij santra researcher ORCID ID = 0000-0003-4469-2515 |
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| shyamal santra Indian politician, IN |
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| saikat santra researcher (ORCID 0000-0002-4198-3192) |
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| mithun santra researcher (ORCID 0000-0003-3165-4659) |
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