Family name Rupan (Rupan 
) , in the world, is quite a rare last name. The surname Rupan is habitual in Qatar, where it is quite a common surname, Sri Lanka, where it is quite a rare surname, and Oman. Measured by absolute frequency, the name is most common in Southern Asia, particularly India, Sri Lanka, and Bangladesh. More prevalently, Rupan is the forename as well as the last name.
Sah, Ghosh, Orain, Oraon, Yadav, Mandal, Manjhi, Mahato, Sarkar, Sahani, Sharma, Barman, Biswas, Kumari, Pandit, Paswan, Prasad, Thakur, Marandi, Mundain, Pasavan, Ravidas, Rishi, Debnath, Kumar, Singh, Saw, Pal, Ram, Raj, Ray, Rai, Roy, Deb, Dei, Dey, Das, Lal, Saha, Shil, Paul, Devi, Nath, Mahto, Munda, Murmu, Sahni, Barua, and Chaudhari