| Acronym | Definition |
|---|
| OIEC➣Oil Industries Engineering and Construction Company |
| OIEC➣Office of Injured Employee Counsel (Texas) |
| OIEC➣Office International de l'Enseignement Catholique |
| OIEC➣Office International de l'Enseignement Catholique (French: Catholic International Education Office) |
| OIEC➣Oficina Internacional de Educación Católica (Spain) |
| OIEC➣Oregon International Education Consortium |
| OIEC➣Organisation Internationale des Etudiants Catholiques |
| OIEC➣Overseas International Education Centres (Australia) |