Surname Motasim (معتصم 
, Motasim 
) , globally, is a common family name. The cognomen Motasim is habitual in Sudan, where it is quite a common surname, Libya, and Syria, where it is quite a rare surname. Measured by absolute frequency, it is the most numerous in Northern Africa, particularly Sudan, Egypt, and Libya. More prevalently, Motasim is the forename as well as the last name.