Family name Mstor (مستور 
, Mstor 
) , worldwide, is quite a common last name. The surname Mstor is habitual in Sudan, where it is quite a common surname, Libya, where it is quite a rare surname, and Saudi Arabia. Not in comparison with a country's population, it is commonest in Sudan, Egypt, and Saudi Arabia. Also, Mstor is the forename as well as the last name.