Throughout the world, Jayakumar (Jayakumar 
) is a common male first name. The given name Jayakumar is habitual in Western Asia, particularly Oman, where it is quite a common primarily male, but very infrequently feminine name, United Arab Emirates, where it is quite a rare masculine name, and Bahrain. Measured by absolute frequency, the name is most common in India, Saudi Arabia, and United Arab Emirates. Very seldom, Jayakumar is the last name as well as the forename.
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| Jayakumar | Sri Lanka, United Arab Emirates, India, Malaysia, Saudi Arabia |
| pallissery nambiath gopalakrishnan nair jayakumar Indian businessperson (born 1952, child of Gopalakrishnan Nair Mepparambathu Sankaran), IN (b. 1952) |
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| vasanthan jayakumar researcher, ORCID id # 0000-0002-6067-4184 |
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| arumugam jayakumar researcher |
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| paramsothy jayakumar researcher |
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| kiridaren jayakumar Malaysian bookseller, MY |
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| kishore l jayakumar researcher |
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| puthenpura jayakumar Ph.D. Florida State University 1992 |
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| arunkumar jayakumar researcher (fuel cells) |
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| maliyakal jayakumar Ph.D. The Pennsylvania State University 1989 |
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Sah, Mishra, Sharma, Kannan, Pancal, Paswan, Prasad, Pillai, Thakur, Paramar, Pasavan, Caudhari, Krishnan, Ramasamy, Debbarma, Chaudhari, Jayaraman, Natarajan, Subramanian, Subramaniam, Mahato, Mandal, Yadav, Nanoo, Ram, Ray, Das, Jai, Jha, Saha, Sahu, Sinh, Soni, Somasundaram, Jaya, Tela, Nair, Menon, Singh, Kumar, Patel, Reddy, Desai, Jayan, Josi, and Ramachandran