Family name Hardziej (Hardziej 
, Гардзей 
) , globally, is a very rare surname. The surname Hardziej is habitual in Poland, where it is a very rare surname, Argentina, and Russia, where it is an extremely rare surname. Measured by absolute frequency, this name is the most popular in Poland, Argentina, and the United States. Also, Hardziej is the forename as well as the last name.