Cognomen كيرش (Kirsch 
, Kirch , Kersh 
) , in all the world, is a common last name. The cognomen كيرش is characteristic of Luxembourg, where it is quite a common surname, Germany, and Estonia, where it is quite a rare surname. In absolute terms, it is commonest in Germany, the United States, and Brazil. Much less frequently, كيرش is the forename as well as the last name.