Cognomen Петерлин (Peterlin 
, Петерлин 
) , around the world, is quite a rare last name. The last name Петерлин is habitual in Slovenia, where it is quite a common surname, Slovakia, where it is quite a rare surname, and Croatia, where it is a rare surname. Not in comparison with a country's population, it is the most numerous in Slovenia, the United States, and Italy. Much less frequently, Петерлин is the forename as well as the last name.