Surname فوست (Fust 
, Fost 
, Voest 
) , all around the world, is quite a rare family name. The cognomen فوست is habitual in Western Europe, particularly Switzerland, where it is quite a common surname, Germany, where it is quite a rare surname, and Netherlands, where it is a rare surname. Measured by absolute frequency, it is commonest in Germany, Switzerland, and the United States. Very seldom, فوست is the forename as well as the last name.