FIU (disambiguation)

Fiu or FIU may refer to:


 * Fiu, mascot of the 2023 Pan American and Parapan American Games
 * Florida International University
 * Fighter Interception Unit, of the Royal Air Force
 * Financial intelligence unit
 * Finno-Ugric languages, with ISO code "fiu"
 * Free International University, a defunct German artistic organization
 * Kwara'ae language, also called Fiu