OAPO
| Acronym | Definition |
|---|---|
| OAPO | Ontario Association of Prosthetists and Orthotists (Canada) |
| OAPO | Organización Atunera del Pacífico Oriental (Spanish: Eastern Pacific Tuna Fishing Organization) |
| OAPO | Oleic Acid-Induced Pulmonary Oedema (sequential intrapulmonary fluid) |