Across the world, Santanu (Santanu 
, শান্তনু ) is a widespread boy's first name. The first name Santanu is habitual in India, where it is quite a common boy's name, Qatar, where it is quite a rare boy's name, and Bangladesh, where it is a rare principally boy's, but very infrequently female name. In absolute terms, this name is the most popular in India, Bangladesh, and Indonesia.
| VARIANT | COUNTRY |
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| Santanu | Bangladesh, United Arab Emirates, United States, India, Indonesia |
| শান্তনু | Bangladesh |
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santanu bhattacharya Indian bioorganic chemist, IN (b. 1957) |
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| santanu bhowmik (b. 1901) |
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santanu mishra Indian social entrepreneur, philanthropist and former lawyer, IN (b. 1965) |
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| santanu roy economist (Southern Methodist University) (b. 1963) |
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| santanu kausik baruah Indian writer, IN (b. 1965) |
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| santanu bose director and drama teacher., IN (b. 1967) |
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| santanu k. baruah (b. 1965) |
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| santanu karan researcher (ORCID 0000-0002-9140-9121) |
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| santanu banik researcher |
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| santanu chakraborty Ph.D. Indian Statistical Institute, Kolkata 2001 |
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| santanu das researcher (ORCID 0000-0001-8445-2589) |
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| santanu chakraborty researcher (ORCID 0000-0002-6703-3996) |
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| santanu mukherjee researcher (ORCID 0000-0002-1190-1117) |
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| santanu maity researcher (ORCID 0000-0001-8047-1547) |
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| santanu chakraborty researcher (ORCID 0000-0002-2975-2260) |
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De, Panda, Dutta, Ghosh, Nayak, Mandal, Mondal, Mishra, Sarkar, Behera, Biswas, Naskar, Halder, Samanta, Pradhan, Debnath, Banerjee, Karmakar, Mahapatra, Mukherjee, Chowdhury, Chatterjee, Patra, Kumar, Kundu, Barik, Sen, Bag, Kar, Pal, Ray, Roy, Dey, Das, Saha, Sahu, Chakraborty, Bera, Giri, Jana, Jena, Naik, Manna, Malik, Maity, Maiti, Mitra, Sahoo, Paul, and Bhattacharya