Cognomen Туах (Tuah 
, Туах 
) , in the world, is quite a common last name. The last name Туах is characteristic of Brunei, where it is quite a common surname, Malaysia, and Liberia, where it is quite a rare surname. Not in comparison with a country's population, it most frequently occurs in Malaysia, Indonesia, and Ghana. Also, Туах is the forename as well as the last name.