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In all the world, Arroyo (Roi , Rojo , Arroyo ) is a common gender-neutral first name. The given name Arroyo is characteristic of Mongolia, where it is quite a common epicene name, Madagascar, and Antigua and Barbuda, where it is quite a common masculine name. Not in comparison with a country's population, it most frequently occurs in Madagascar, the Democratic Republic of the Congo, and Indonesia. More frequently, Arroyo is the last name as well as the forename.
Arroyo is also a name for the fictitious and mythical characters: Roi d’Écosse , character in Ariodante.