Family name Фах (Fah 
, Fach 
, Фах 
) , in all the world, is a common last name. The last name Фах is habitual in Malaysia, where it is a common surname, Switzerland, where it is quite a common surname, and Brunei, where it is quite a rare surname. Measured by absolute frequency, this name is the most popular in Malaysia, Indonesia, and Germany. Much less frequently, Фах is the forename as well as the last name.