Cognomen Aí (Ai 
, Ad 
, Aí 
) , all over the world, is a widespread surname. The surname Aí is habitual in Malaysia, where it is quite a common surname, United Arab Emirates, and Bulgaria (explore the name in all countries). Not in comparison with a country's population, the name is most common in China, Malaysia, and Indonesia. Likewise, Aí is the forename as well as the last name.