Last name Chattaraj (Chattaraj 
) , throughout the world, is a common family name. The cognomen Chattaraj is habitual in India, where it is quite a rare surname, and the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
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| Chattaraj | China, United Kingdom, Australia, United States, India |
| suniti chattaraj Indian politician, IN (b. 1943) |
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| rajarshi chattaraj researcher |
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| krishna gopal chattaraj researcher |
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| pratim k chattaraj researcher |
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| parna chattaraj researcher |
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