Last name جاستين (Justin 
, جاستين 
, Gasteen 
) , across the world, is a common surname. The surname جاستين is habitual in Saint Lucia, where it is a common surname, Brunei, where it is quite a common surname, and Slovenia (explore the name in all countries). In absolute terms, it most frequently occurs in Nigeria, Cameroon, and Indonesia. More frequently, جاستين is the forename as well as the last name.