Cognomen Гайлер (Hayler 
, Guyler 
, Гайлер 
) , in the entire world, is quite a rare family name. The family name Гайлер is habitual in the United Kingdom, where it is quite a rare surname, Australia, where it is a rare surname, and Norway. Not in comparison with a country's population, it is the most numerous in the United Kingdom, Australia, and the United States. Very seldom, Гайлер is the forename as well as the last name.