Last name Хах (Hah 
, Khakh 
, Хах 
) , in the world, is quite a common family name. The cognomen Хах is habitual in Brunei, where it is quite a common surname, Malaysia, and Mauritius, where it is quite a rare surname. Measured by absolute frequency, it is the most numerous in Malaysia, South Korea, and Saudi Arabia. Very seldom, Хах is the forename as well as the last name.