Family name Aiar (Aiar 
, Айар 
) , all over the world, is a very rare cognomen. The cognomen Aiar is habitual in Estonia, where it is a rare surname, Georgia, and Kyrgyzstan, where it is a very rare surname. Not in comparison with a country's population, it is the most numerous in Morocco, India, and Estonia. Likewise, Aiar is the forename as well as the last name.