In all the world, المستر (المستر 
) is quite a rare boy's first name. The given name المستر is habitual in Northern Africa, particularly Egypt, where it is quite a rare masculine name, Sudan, and Libya, where it is a rare masculine name. Not in comparison with a country's population, it is commonest in Egypt, Sudan, and Iraq. Also, المستر is the last name as well as the forename.