Family name Сеп (Sep 
, Сеп 
, Zeps 
) , globally, is quite a rare last name. The surname Сеп is characteristic of Latvia, where it is quite a common surname, Slovenia, where it is quite a rare surname, and Guatemala. Not in comparison with a country's population, it most frequently occurs in Indonesia, Guatemala, and Myanmar. Likewise, Сеп is the forename as well as the last name.