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Throughout the world, Leira (Leire , Leira , Glarea ) is quite a common unisex given name. The forename Leira is characteristic of Spain, where it is quite a common mostly female, but uncommonly boy's name, Puerto Rico, where it is quite a rare feminine name, and Qatar, where it is a rare masculine name. Not in comparison with a country's population, the name is most common in Spain, Philippines, and Brazil. Likewise, Leira is the last name as well as the forename.
Leira is also a name for the fictitious and mythical characters: Leira , the fictional deity from Dungeons & Dragons and Leira , the fictional character from Dragon Quest: The Adventure of Dai.