Family name Masidin (Masidin 
) , throughout the world, is a rare cognomen. The family name Masidin is characteristic of South-eastern Asia, particularly Malaysia, where it is a rare surname, Indonesia, and Philippines, where it is an extremely rare surname. In absolute terms, this name is the most popular in Indonesia, Malaysia, and India. Much less frequently, Masidin is the forename as well as the last name.