Across the world, Rajamohan (Rajamohan 
) is a common boy's given name. The given name Rajamohan is habitual in India, where it is a rare boy's name, Kuwait, and Singapore. Measured by absolute frequency, it is the most numerous in India, Malaysia, and Kuwait. Very seldom, Rajamohan is the last name as well as the forename.
| VARIANT | COUNTRY |
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| Rajamohan | United Arab Emirates, Sri Lanka, Malaysia, Singapore, India |
| govindan rajamohan Indian molecular microbiologist, IN (b. 1969) |
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| govindan rajamohan researcher |
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Sah, Mahato, Mishra, Mistri, Sarkar, Sharma, Areddy, Bhagat, Bhuiya, Pandit, Pandey, Paswan, Prasad, Lohara, Thakur, Tiwari, Debnath, Tripura, Debbarma, Nalappan, Chaudhari, Choudhary, Manjhi, Natarajan, Yadav, Nayak, Saw, Pal, Ram, Ray, Roy, Das, Jha, Sahu, Sinh, Raut, Devi, Nath, Nair, Mahto, Majhi, Mohan, Singh, Kumar, Patel, Reddy, Reang, Oraon, and Ramamoorthy