Surname Каирис (Kairis 
, Каирис 
) , around the globe, is quite a rare family name. The surname Каирис is characteristic of Latvia, where it is quite a rare surname, Greece, and Belgium. Not in comparison with a country's population, the name is most common in the United States, Greece, and Belgium. Much less frequently, Каирис is the forename as well as the last name.