Across the world, Casan (Casan 
) is quite a rare male first name. The forename Casan is habitual in Philippines, where it is quite a rare masculine name, Saudi Arabia, where it is a rare boy's name, and Indonesia, where it is a very rare boy's name. Measured by absolute frequency, the name is most common in Philippines, India, and Indonesia. Also, Casan is the last name as well as the forename.