Cognomen هیثم (Haitam 
, Haysam 
, Hithm ) , in all the world, is quite a rare surname. The family name هیثم is characteristic of Morocco, where it is quite a rare surname, Lebanon, and Algeria. Measured by absolute frequency, the name is most common in Northern Africa, particularly Morocco, Egypt, and Algeria. More frequently, هیثم is the forename as well as the last name.