Cognomen Buchay (Buchay 
) , throughout the world, is a very rare last name. The last name Buchay is habitual in Venezuela, where it is a very rare surname, Brazil, where it is an extremely rare surname, and India. Much more frequently, Buchay is the forename as well as the last name.
Sah, Yadav, Mandal, Manjhi, Mahato, Mehata, Sahani, Sharma, Bhagat, Pandit, Tanti, Paswan, Thakur, Mukhiya, Saradar, Chaupal, Pasavan, Ravidas, Harijan, Rishidev, Vahardar, Tatama, Chaudhari, Rishi, Kamat, Ram, Ray, Das, Jha, Miya, Muni, Sahu, Sada, Safi, Rajak, Shah, Raut, Devi, Mahto, Mochi, Mehta, Miyan, Sahni, Saday, Singh, Sinh, and Fernandez