Surname Karnam (Karnam 
) , worldwide, is a common cognomen. The cognomen Karnam is habitual in Bahrain, where it is quite a rare surname, India, and United Arab Emirates, where it is a rare surname. Not in comparison with a country's population, it is the most numerous in India, the United States, and United Arab Emirates. Very seldom, Karnam is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Karnam | Australia, Indonesia, United States, United Arab Emirates, India |
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karnam venkatachalam Indian government official. (1874–1934), IN (b. 1874) |
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karnam malleswari Indian weightlifter, IN (b. 1975) |
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| karnam s murthy researcher |
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| karnam venkatesh researcher (ORCID 0000-0001-8765-8451) |
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| anupama karnam researcher |
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| karnam jayarampillai rajendra prasad researcher |
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