Family name Тіу (Tiu 
, Тіу 
) , around the world, is a common cognomen. The surname Тіу is characteristic of Guatemala, where it is quite a common surname, Philippines, and Hong Kong, where it is quite a rare surname. Measured by absolute frequency, it most frequently occurs in Philippines, India, and Guatemala. Much less frequently, Тіу is the forename as well as the last name.