Cognomen Altaj (التاج 
, Altaj 
) , globally, is a common last name. The surname Altaj is habitual in Sudan, where it is quite a common surname, Yemen, where it is quite a rare surname, and North Macedonia. Not in comparison with a country's population, the name is most common in Sudan, Yemen, and Saudi Arabia. Also, Altaj is the forename as well as the last name.