Family name Чум (Chum 
, Чум 
, Tuamas 
) , in the world, is a common last name. The cognomen Чум is characteristic of Eastern Asia, particularly Hong Kong, where it is quite a common surname, Taiwan, where it is quite a rare surname, and Macao. In absolute terms, it most frequently occurs in Tanzania, Taiwan, and Guatemala. Likewise, Чум is the forename as well as the last name.