| Acronym | Definition |
|---|
| OPIE➣Open Palmtop Integrated Environment (window manager for Linux on PDAs) |
| OPIE➣Office pour l'Information Eco Entomologique |
| OPIE➣Ohio Program of Intensive English (Ohio University) |
| OPIE➣One-Time Password in Everything (UNIX authentication method) |
| OPIE➣Operational Programme Industry and Enterprise (Czech Republic) |
| OPIE➣Oceania Polytechnic Institute of Education (Australia) |