All over the world, 瑞亚 (瑞亚 
) is a rare unisex given name. The forename 瑞亚 is habitual in Eastern Asia, particularly China, where it is a very rare epicene name. Much less frequently, 瑞亚 is the last name as well as the forename.
瑞亚 is also a name for the fictitious and mythical characters: Rhea , the fictional character from the television series Supergirl and Rhea Jones , the DC Comics character.