Surname Ramkumar (Ramkumar 
, रामकुमार ) , in the world, is quite a common cognomen. The cognomen Ramkumar is characteristic of Trinidad and Tobago, where it is quite a rare surname, Qatar, and United Arab Emirates. In absolute terms, it most frequently occurs in India, United Arab Emirates, and Saudi Arabia. More frequently, Ramkumar is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Ramkumar | Qatar, United Arab Emirates, Saudi Arabia, Nepal, India |
| रामकुमार | India |
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kapila ramkumar Indian writer, IN (b. 1952) |
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| m. ramkumar politician, IN (b. 1968) |
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| vickram ramkumar researcher |
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| venkatachalam ramkumar researcher (ORCID 0000-0001-7088-5797) |
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| pradeep kumar ramkumar researcher (ORCID 0000-0003-3297-4996) |
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| shreya ramkumar researcher |
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| balkrishna ramkumar Ph.D. University of Illinois at Urbana-Champaign 1991 |
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| satish ramkumar researcher |
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| venkatachalam ramkumar researcher (ORCID 0000-0002-5828-5323) |
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| aravind ramkumar researcher (ORCID 0000-0001-5024-0342) |
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| hema ramkumar researcher |
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| dipak b ramkumar researcher |
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| nitya ramkumar researcher |
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| mu ramkumar researcher |
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| gurumurthy d. ramkumar Ph.D. Stanford University 1998 |
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Sah, Pandit, Pandey, Paswan, Prasad, Thakur, Tiwari, Ganesan, Shrestha, Selvaraj, Barman, Krishnan, Chaudhari, Prajapati, Rajendran, Jayaraman, Natarajan, Srinivasan, Rangaswamy, Subramanian, Ramachandran, Chaudhary, Radhakrishnan, Sharma, Mondal, Pal, Ram, Ray, Rai, Das, Jha, Sahu, Shah, Sing, Mishra, Mahto, Singh, Kumar, Patel, Gupta, Varma, Verma, Yadav, Mandal, Mahato, Sahni, and Balasubramanian