Last name Дая (Daja 
, Daia 
, Dája 
) , globally, is quite a common cognomen. The last name Дая is habitual in Albania, where it is quite a common surname, Romania, where it is quite a rare surname, and Uruguay. Measured by absolute frequency, the name is most common in Albania, Romania, and India. Also, Дая is the forename as well as the last name.