Family name Efrosinya (Ефросинья 
, Ефросиня 
, Efrosinya 
) , across the world, is a very rare last name. The surname Efrosinya is habitual in Kyrgyzstan, where it is a rare surname, Bulgaria, and Russia, where it is an extremely rare surname. Predominantly, Efrosinya is the forename as well as the last name.