Surname Karmarkar (Karmarkar 
) , across the world, is a common cognomen. The family name Karmarkar is habitual in India, where it is a rare surname, New Zealand, and United Arab Emirates. Measured by absolute frequency, it is commonest in India, the United States, and United Arab Emirates.
| VARIANT | COUNTRY |
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| Karmarkar | India, Poland, United Arab Emirates, United States, United Kingdom |
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gurubai karmarkar Indian physician (b. 1801) |
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| dattatraya parashuram karmarkar politician from India, IN (b. 1902) |
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kiran karmarkar Indian television actor, IN (b. 1958) |
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| d. p. karmarkar (b. 1953) |
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| soumen karmarkar Indian cricketer, IN (b. 1973) |
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| kaustubh narsinh karmarkar Indian businessperson (born 1979, child of Narsinh Shridhar Karmarkar), IN (b. 1979) |
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| amol m karmarkar researcher |
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| taruja karmarkar researcher ORCID 0000-0003-3311-3231 |
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| s. g. karmarkar Indian navy admiral |
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| vikram s. karmarkar researcher |
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| hrishikesh karmarkar Ph.D. Indian Institute of Technology, Bombay 2011 |
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| roopali karmarkar researcher |
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| taruja karmarkar researcher (ORCID 0000-0002-8720-2435) |
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| ellora karmarkar researcher |
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| sudha karmarkar IN |
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