Last name Лая (Laia 
, Laja 
, Лая 
) , globally, is a common family name. The family name Лая is habitual in Spain, where it is quite a common surname, Estonia, where it is quite a rare surname, and Indonesia. Measured by absolute frequency, it is the most numerous in Indonesia, Brazil, and Spain. Likewise, Лая is the forename as well as the last name.