Family name Ranjoy (Ranjoy 
) , all around the world, is a very rare last name. The surname Ranjoy is characteristic of Southern Asia, particularly India, where it is an extremely rare surname. Much more prevalently, Ranjoy is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ranjoy | Bangladesh, United States, Malaysia, Philippines, India |
De, Mandal, Mondal, Sarkar, Singha, Barman, Brahma, Biswas, Pandey, Thakur, Hajong, Rabidas, Narzary, Banerjee, Karmakar, Talukdar, Mushahary, Mukherjee, Choudhuri, Chatterjee, Basumatary, Chakraborty, Hazra, Ghosh, Dutta, Rabha, Mal, Sen, Ram, Ray, Roy, Dey, Das, Jha, Saha, Shaw, Chakrabortty, Baro, Boro, Bose, Paul, Jana, Majhi, Mitra, Singh, Barua, Bayot, Bagdi, Basu, and Bhattacharya