Family name Zalen (Zalen 
) , in all the world, is a rare surname. The cognomen Zalen is habitual in Netherlands, where it is a rare surname, Israel, where it is a very rare surname, and the United States, where it is an extremely rare surname. Measured by absolute frequency, it is the most numerous in Netherlands, the United States, and Brazil. Much less frequently, Zalen is the forename as well as the last name.