Family name Aldaia (Aldaia 
) , around the world, is a rare last name. The cognomen Aldaia is habitual in Spain, where it is a rare surname, Brazil, where it is a very rare surname, and Honduras. In absolute terms, this name is the most popular in Spain, Brazil, and the United States. Much less frequently, Aldaia is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Aldaia | Brazil, United States, Honduras, Spain |