Surname جاست (Just 
, Jast 
, جاست 
) , in all the world, is a common cognomen. The surname جاست is habitual in Denmark, where it is quite a common surname, Germany, and Austria, where it is quite a rare surname. In absolute terms, it is the most numerous in Germany, the United States, and France. Also, جاست is the forename as well as the last name.