Cognomen Ramanarayanan (Ramanarayanan 
) , in the world, is a rare family name. The family name Ramanarayanan is characteristic of United Arab Emirates, where it is a rare surname, Singapore, and Italy, where it is a very rare surname. In absolute terms, it is the most numerous in India, the United States, and United Arab Emirates. More prevalently, Ramanarayanan is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Ramanarayanan | Italy, United States, Singapore, India, United Arab Emirates |
| rajaraman ramanarayanan Ph.D. The Pennsylvania State University 2006 |
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| sivaramakrishnan ramanarayanan researcher |
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| ganesh ramanarayanan Ph.D. Cornell University 2008 |
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An, Subramanian, Padmanabhan, Purnanandam, Janakiraman, Jambunathan, Viswanathan, Sampathkumar, Balachandran, Ramakrishnan, Unnikrishnan, Krishnamurthy, Narayanaswamy, Venkiteswaran, Krishnamoorthy, Gopalakrishnan, Sambamurthy, Balasubramanian, Venkatesan, Srinivasan, Ram, Nair, Iyer, Raman, Jisha, Ramani, Selvaraj, Baskaran, Krishnan, Rajamani, Mahadevan, Sridharan, Bagavathi, Bagavathy, Nagarajan, Gowri Shankar, and Sankaranarayanan