Surname 加斯 (Garth 
, Gass 
, Gasch ) , all over the world, is a common last name. The surname 加斯 is characteristic of Nicaragua, where it is quite a common surname, Switzerland, where it is quite a rare surname, and Tunisia. In absolute terms, it is commonest in the United States, Germany, and Brazil. Also, 加斯 is the forename as well as the last name.