Surname Alsr (السر 
, الصر 
, Alsr 
) , across the world, is a common last name. The surname Alsr is characteristic of Sudan, where it is quite a common surname, Palestinian Territory, and Saudi Arabia, where it is quite a rare surname. In absolute terms, this name is the most popular in Sudan, Saudi Arabia, and Egypt. Also, Alsr is the forename as well as the last name.