Family name トゥンク (Tengku 
, Teuku 
, Tunku 
) , in the world, is quite a common surname. The cognomen トゥンク is habitual in South-eastern Asia, particularly Malaysia, where it is quite a rare surname, Indonesia, and Singapore, where it is a rare surname. Measured by absolute frequency, it most frequently occurs in Indonesia, Malaysia, and Nigeria. More frequently, トゥンク is the forename as well as the last name.