Cognomen Tyu (Tyu 
, Тьу 
, Тиу ) , in all the world, is quite a rare surname. The family name Tyu is characteristic of Taiwan, where it is quite a rare surname, Malaysia, and Saudi Arabia, where it is a rare surname. In absolute terms, it most frequently occurs in Taiwan, Nigeria, and Malaysia. Much less frequently, Tyu is the forename as well as the last name.