Family name Sopun (Sopun 
, Сопун 
) , all around the world, is a rare last name. The surname Sopun is characteristic of Oman, where it is quite a rare surname, Qatar, where it is a rare surname, and Ukraine. Measured by absolute frequency, this name is the most popular in Ukraine, Bangladesh, and Russia. Much less frequently, Sopun is the forename as well as the last name.