Family name Chainu (Chainu 
) , in all the world, is a rare surname. The surname Chainu is characteristic of Thailand, where it is a rare surname, and India, where it is an extremely rare surname. More frequently, Chainu is the forename as well as the last name.
Bai, Singh, Kalar, Kisan, Patil, Patel, Ganda, Joshi, Nayak, Oraon, Yadav, Mirdha, Bhatra, Kanwar, Khadia, Padhan, Pujari, Lohara, Jadhav, Bhatara, Kumbhar, Pradhan, Munda, Harijan, Meher, Mayoe, Bag, Ram, Ray, Das, Lal, Sahu, Sekh, Banu, Bibi, Bhue, Bhoi, Khan, Paik, Raut, Devi, Gaud, Gond, Jani, Vanu, Oram, Uike, Majhi, and Chaudhary