Last name Sarthak (Sarthak 
) , around the globe, is a rare cognomen. The cognomen Sarthak is habitual in Bangladesh, where it is a very rare surname, Malaysia, and India. In absolute terms, it is commonest in India, Bangladesh, and China. Much more frequently, Sarthak is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Sarthak | Bangladesh, United Arab Emirates, Nepal, United States, India |
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krishna sarthak (b. 1991) |
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| sarthak behuria Indian businessperson (born 1952, child of Nrusingha Charan Behuria), IN (b. 1952) |
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| sarthak misra researcher (orcid 0000-0003-4961-0144) |
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| sarthak behuria Indian businessman |
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| sarthak das researcher |
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| sarthak sinha researcher |
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| sarthak pathak researcher |
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| sarthak nepal researcher |
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| sarthak nag researcher |
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| sarthak chatterjee researcher |
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| sarthak angal researcher (ORCID 0000-0003-1619-1529) |
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| sarthak soin researcher |
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| sarthak chandra researcher (ORCID 0000-0002-3047-8334) |
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| sarthak subhankar researcher (ORCID 0000-0001-8664-3098) |
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| sarthak tandon researcher (ORCID 0000-0003-2352-5961) |
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Ray, Mittal, Saxena, Sharma, Shukla, Bansal, Kapoor, Khanna, Pandey, Grover, Tiwari, Mahajan, Mohanty, Singhal, Agarwal, Agrawal, Chauhan, Kaushik, Aggarwal, Banerjee, Bhardwaj, Chaudhary, Mishra, Mondal, Yadav, Verma, Roy, Das, Sahu, Shah, Garg, Goel, Jain, Majhi, Mehta, Singh, Srivastava, Sethi, Arora, Batra, Kumar, Patel, Gupta, Goyal, Ghosh, Joshi, Tyagi, Nayak, Anand, and Khandelwal