All around the world, Kaustav (Kaustav 
) is quite a common masculine first name. The first name Kaustav is habitual in India, where it is a rare masculine name, and the United States, where it is an extremely rare gender-neutral name.
| VARIANT | COUNTRY |
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| Kaustav | United Kingdom, Ireland, Australia, India, United States |
| kaustav chatterjee researcher (ORCID 0000-0003-3527-9796) |
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| kaustav majumder researcher |
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| kaustav dey researcher |
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| kaustav chaudhury researcher |
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| kaustav mukherjee researcher (ORCID 0000-0002-7057-0880) |
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| kaustav biswas researcher |
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| kaustav das gupta researcher |
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| kaustav banerjee Decision Sciences researcher |
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| kaustav bera researcher (ORCID 0000-0002-0962-4368) |
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| kaustav khatua researcher ORCID ID = 0000-0002-2497-3187 |
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| kaustav sinha Casting Director and VFX Producer, IN (b. 1986) |
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| kaustav banerjee electrical engineer |
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De, Bagchi, Biswas, Kalita, Lahiri, Halder, Samanta, Ganguly, Goswami, Majumder, Majumdar, Sengupta, Banerjee, Bhowmick, Karmakar, Dasgupta, Mukherjee, Choudhury, Chowdhury, Chatterjee, Chakraborty, Bhattacharya, Sarkar, Mondal, Mandal, Nandy, Sen, Kar, Pal, Ray, Roy, Dey, Das, Saha, Basu, Bose, Bhattacharyya, Paul, Nath, Manna, Maity, Mitra, Sinha, Kundu, Datta, Dutta, Gupta, Ghosh, Guha, and Bhattacharjee