Last name Jefrem (Ефрем 
, Єфрем , Jefrem 
) , in all the world, is a rare family name. The cognomen Jefrem is characteristic of Bulgaria, where it is quite a rare surname, Armenia, where it is a rare surname, and Ukraine. Not in comparison with a country's population, it is commonest in Eastern Europe, particularly Bulgaria, Ukraine, and Russia. More prevalently, Jefrem is the forename as well as the last name.