| Acronym | Definition |
|---|
| OACI➣Organisation de l'Aviation Civile Internationale |
| OACI➣Organización de Aviación Civil Internacional (Spanish for ICAO) |
| OACI➣Organização de Aviação Civil Internacional (Brazilian Portuguese for ICAO) |
| OACI➣Open Air Campaigners International (Nazareth, PA) |
| OACI➣Office of Academic Conferences and Institutes (UNC Asheville) |