Surname Гайон (Guion 
, Гайон 
, Gayón 
) , globally, is quite a rare family name. The cognomen Гайон is habitual in France, where it is quite a rare surname, Luxembourg, and Philippines. In absolute terms, the name is most common in France, Philippines, and the United States. Very seldom, Гайон is the forename as well as the last name.