Surname Deia (Dea 
, Deia 
) , in the world, is a common cognomen. The last name Deia is characteristic of Georgia, where it is quite a common surname, Albania, and Ireland, where it is quite a rare surname. Not in comparison with a country's population, the name is most common in Indonesia, China, and the United States. More prevalently, Deia is the forename as well as the last name.