Throughout the world, กาเลน (Kalen 
, กาเลน 
) is quite a rare dominantly masculine, but infrequently feminine forename. The first name กาเลน is habitual in the United States, where it is a rare mostly male, but uncommonly girly name, New Zealand, where it is a rare male name, and Tanzania, where it is a rare gender-neutral name. Not in comparison with a country's population, it most frequently occurs in the United States, India, and Tanzania. Likewise, กาเลน is the last name as well as the forename.