Cognomen لايمان (Lyman 
, Laiman 
, Layman ) , throughout the world, is a common last name. The cognomen لايمان is characteristic of the United States, where it is quite a rare surname, Malaysia, and Israel. Measured by absolute frequency, this name is the most popular in the United States, Indonesia, and Malaysia. Very seldom, لايمان is the forename as well as the last name.