Cognomen Nilkantha (Nilkantha 
) , in all the world, is a very rare family name. The surname Nilkantha is habitual in Southern Asia, particularly India, where it is an extremely rare surname. Much more frequently, Nilkantha is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Nilkantha | Qatar, United Arab Emirates, United States, Nepal, India |
De, Ghosh, Nandi, Hazra, Mandal, Maiiti, Mahato, Mondal, Sardar, Sarkar, Barman, Biswas, Halder, Pradhan, Debnath, Haladar, Banerjee, Karmakar, Pramanik, Mukherjee, Paramanik, Chatterjee, Dutta, Patra, Kumar, Kundu, Mal, Sau, Sen, Bag, Pal, Ray, Roy, Dey, Das, Maji, Chakraborty, Saha, Bera, Giri, Jana, Manna, Maity, Maiti, Majhi, Bagdi, Bauri, Bouri, Sing, and Bhattacharya