Cognomen Айдэр (Ayder 
, Айдэр 
) , in the entire world, is a rare surname. The cognomen Айдэр is habitual in Turkey, where it is a rare surname, Nicaragua, where it is a very rare surname, and Brazil. In absolute terms, the name is most common in Turkey, Brazil, and China. Also, Айдэр is the forename as well as the last name.