Surname Мартц (Marz 
, Martz , Мартц 
) , worldwide, is a common last name. The last name Мартц is habitual in El Salvador, where it is quite a common surname, Switzerland, where it is quite a rare surname, and Germany. Measured by absolute frequency, this name is the most popular in the United States, Germany, and France. Much less frequently, Мартц is the forename as well as the last name.