Family name Rupai (Rupai 
) , throughout the world, is quite a rare surname. The surname Rupai is habitual in Bangladesh, where it is a rare surname, Indonesia, where it is a very rare surname, and India. More frequently, Rupai is the forename as well as the last name.
Bai, Mondal, Muramu, Murmmu, Muduli, Bhatra, Praska, Pujari, Hansda, Hantal, Hemram, Hemrum, Hikaka, Marandi, Minyaka, Bhatara, Kadraka, Harijan, Hansada, Hansdah, Hemaram, Hembram, Manjhi, Marndi, Huika, Ganda, Das, Sing, Khil, Devi, Jani, Tudu, Naik, Mardi, Mandi, Majhi, Mandinga, Munda, Santa, Saren, Singh, Soren, Baske, Bauri, Besra, Khara, Kisku, Pangi, Murmu, and Hemabram