Last name Gayny (Гайный 
, Гаини 
, Гайний 
) , in the entire world, is a very rare cognomen. The surname Gayny is habitual in Kyrgyzstan, where it is a very rare surname, Germany, and Ukraine, where it is an extremely rare surname. In absolute terms, the name is most common in Germany, the United States, and Kyrgyzstan. Much more prevalently, Gayny is the forename as well as the last name.