Cognomen Gaiar (Гаяр 
, Гаярь , Gaiar 
) , all around the world, is a rare family name. The family name Gaiar is characteristic of Egypt, where it is a very rare surname, Venezuela, where it is an extremely rare surname, and Ukraine. In absolute terms, it is commonest in Egypt, India, and Brazil. Predominantly, Gaiar is the forename as well as the last name.