Family name Геико (Geiko 
, Geyko 
, Геико 
) , in the entire world, is a rare last name. The surname Геико is habitual in Latvia, where it is quite a rare surname, Estonia, where it is a rare surname, and Belarus. In absolute terms, the name is most common in Russia, Latvia, and Belarus. Very seldom, Геико is the forename as well as the last name.