Cognomen Rairan (Rairan 
) , around the world, is quite a rare last name. The family name Rairan is habitual in Colombia, where it is quite a rare surname, Ecuador, where it is a very rare surname, and the United States, where it is an extremely rare surname. Measured by absolute frequency, it most frequently occurs in Colombia, the United States, and India. Very seldom, Rairan is the forename as well as the last name.