Cognomen Гиско (Gisko 
, Гиско 
, Gysko) , in the entire world, is a rare family name. The cognomen Гиско is habitual in Eastern Europe, particularly Belarus, where it is quite a rare surname, Hungary, where it is a rare surname, and Poland, where it is a very rare surname. Not in comparison with a country's population, this name is the most popular in Eastern Europe, particularly Belarus, Poland, and Russia. Much less frequently, Гиско is the forename as well as the last name.