Surname Mormor (Mormor 
, Mummu 
, Mummo 
) , across the world, is quite a rare last name. The last name Mormor is characteristic of Denmark, where it is a rare surname, Ghana, and Sweden. In absolute terms, this name is the most popular in India, Ghana, and Indonesia. Very seldom, Mormor is the forename as well as the last name.