Surname Ief (Ief 
) , in all the world, is a rare family name. The cognomen Ief is habitual in Belgium, where it is a rare surname, Indonesia, where it is a very rare surname, and Thailand, where it is an extremely rare surname. Measured by absolute frequency, this name is the most popular in Indonesia, Belgium, and India. Also, Ief is the forename as well as the last name.