Cognomen Roychoudhury (Roychoudhury 
) , around the world, is quite a rare surname. The last name Roychoudhury is characteristic of United Arab Emirates, where it is a rare surname, Oman, and India. In absolute terms, the name is most common in India, the United States, and United Arab Emirates.
| VARIANT | COUNTRY |
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| Roychoudhury | United Kingdom, Saudi Arabia, United Arab Emirates, United States, India |
| sudarshana roychoudhury researcher |
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| satrajit roychoudhury researcher (ORCID 0000-0003-4001-3036) |
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| pavitra roychoudhury Ph.D. University of Idaho 2013 |
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| aryadeep roychoudhury researcher (ORCID 0000-0003-2324-940X) |
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| arindam roychoudhury Ph.D. University of Washington 2006 |
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| bikash roychoudhury Indian politician, IN |
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| shubhadeep roychoudhury researcher |
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| alakendra roychoudhury researcher ORCID ID = 0000-0002-5627-8891 |
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| abhik roychoudhury Ph.D. State University of New York at Stony Brook 2000 |
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| k.n. roychoudhury botanist |
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| pavitra roychoudhury researcher, ORCID id # 0000-0002-4567-8232 |
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| ajoy roychoudhury researcher |
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| susanta roychoudhury researcher |
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| sohini roychoudhury researcher |
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| sourav roychoudhury researcher ORCID ID = 0000-0001-7914-2842 |
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