Last name ハーデン (Harden 
, ハーデン) , all around the world, is a common surname. The surname ハーデン is habitual in the United States, where it is quite a rare surname, New Zealand, and Australia. Measured by absolute frequency, it most frequently occurs in the United States, the United Kingdom, and Australia. Much less frequently, ハーデン is the forename as well as the last name.