Last name Paaren (Paaren 
) , across the world, is a very rare surname. The cognomen Paaren is characteristic of Estonia, where it is quite a rare surname, Finland, where it is a very rare surname, and Canada, where it is an extremely rare surname. Measured by absolute frequency, it is the most numerous in the United States, Estonia, and Germany. Very seldom, Paaren is the forename as well as the last name.