Aija

Aija may refer to:


 * Aija (given name), Latvian feminine given name
 * Aija Province, province in the Ancash Region of Peru
 * Aija District, district in the Ancash Region of Peru
 * Aija, Peru, town in the Ancash Region of Peru
 * Aijā, 2023 song by Sudden Lights set to represent Latvia in the Eurovision Song Contest 2023