Cognomen ไอร่า (Eira 
, Eaira 
, ไอร่า) , around the world, is quite a common family name. The family name ไอร่า is characteristic of Norway, where it is quite a common surname, Portugal, where it is quite a rare surname, and Venezuela. Not in comparison with a country's population, it is the most numerous in Mexico, Portugal, and Norway. Also, ไอร่า is the forename as well as the last name.