Worldwide, Rajnarain (Rajnarain 
) is quite a rare male first name. The first name Rajnarain is characteristic of Southern Asia, particularly India, where it is a rare boy's name. Much less frequently, Rajnarain is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Rajnarain | United Kingdom, South Africa, Brazil, United States, India |
| rajnarain dutt Bengali poet (b. 1824) |
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| rajnarain rao Indian politician, IN |
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Sah, Mishra, Sachan, Sharma, Shukla, Pathak, Pandey, Prasad, Thakur, Tivari, Tiwari, Itwaru, Avasthi, Pandeya, Persaud, Dikshit, Dvivedi, Trivedi, Upadhya, Tripathi, Maurya, Mandal, Yadav, Varma, Pal, Ram, Rai, Das, Jha, Soni, Bind, Garg, Giri, Srivastava, Ojha, Mishr, Shukl, Singh, Patel, Resal, Dixit, Doobe, Gupta, Tyagi, Yadv, and Vishvakarma