OACI
| 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) |