Cognomen פטרק (Petrack 
, פטרק 
) , around the world, is a rare surname. The cognomen פטרק is habitual in Israel, where it is a rare surname, Switzerland, where it is a very rare surname, and Germany. Measured by absolute frequency, this name is the most popular in the United States, Germany, and Australia. Much less frequently, פטרק is the forename as well as the last name.