Family name טרייר (Trier 
, טרייר 
) , in the entire world, is quite a rare last name. The family name טרייר is habitual in Denmark, where it is quite a common surname, Netherlands, where it is quite a rare surname, and Germany. In absolute terms, the name is most common in Germany, the United States, and Denmark. Much less frequently, טרייר is the forename as well as the last name.