Family name Girko (Girko 
, Гирко 
, Гирько 
) , worldwide, is quite a rare cognomen. The family name Girko is characteristic of Belarus, where it is quite a rare surname, Kazakhstan, where it is a rare surname, and Russia. In absolute terms, it is commonest in Eastern Europe, particularly Russia, Belarus, and Ukraine. Much less frequently, Girko is the forename as well as the last name.