Last name Дайян (Dianne 
, Дайян 
, Dailland 
) , across the world, is quite a rare cognomen. The surname Дайян is characteristic of Cameroon, where it is quite a rare surname, United Arab Emirates, where it is a rare surname, and Kuwait. In absolute terms, it is the most numerous in the United States, Cameroon, and France. Much more prevalently, Дайян is the forename as well as the last name.