Last name Yongkong (Yongkong 
) , in all the world, is a rare cognomen. The cognomen Yongkong is habitual in South-eastern Asia, particularly Indonesia, where it is a very rare surname, Thailand, and Malaysia, where it is an extremely rare surname. Measured by absolute frequency, it most frequently occurs in Indonesia, Thailand, and India. More prevalently, Yongkong is the forename as well as the last name.