Surname Кальсум (Kalsoom 
, Кальсум 
) , across the world, is quite a rare family name. The family name Кальсум is habitual in Pakistan, where it is quite a rare surname, United Arab Emirates, where it is a rare surname, and Saudi Arabia. Measured by absolute frequency, this name is the most popular in Pakistan, Saudi Arabia, and India. More prevalently, Кальсум is the forename as well as the last name.