Last name Кужак (Kuszczak 
, Кужак 
) , around the world, is a rare surname. The surname Кужак is habitual in Poland, where it is a rare surname, Argentina, where it is a very rare surname, and Canada. Measured by absolute frequency, this name is the most popular in Poland, the United States, and Argentina. Likewise, Кужак is the forename as well as the last name.