Last name Ratnagar (Ratnagar 
) , across the world, is a very rare cognomen. The family name Ratnagar is characteristic of India, where it is an extremely rare surname, Canada, and the United States. Also, Ratnagar is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ratnagar | India, Canada, United States |
| f.r. ratnagar Indian, 1898-1994; artist (b. 1898) |
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| shereen ratnagar Indian archaeologist (b. 1950) |
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