| Acronym | Definition |
|---|
| OAG | Office of the Auditor General (of Canada) |
| OAG | Office of the Attorney General |
| OAG | Owens Art Gallery (Canada) |
| OAG | Official Airline Guide |
| OAG | Overly Attached Girlfriend |
| OAG | Open Applications Group |
| OAG | Operations Analysis Group |
| OAG | Open-Angle Glaucoma |
| OAG | Open Application Group |
| OAG | Oregon Anesthesiology Group PC |
| OAG | Office of the Controller and Auditor-General (New Zealand) |
| OAG | Operational Advisory Group |
| OAG | Officer Advisory Group (UK) |
| OAG | Orange, New South Wales, Australia - Springhill (Airport Code) |
| OAG | Office of the Adjutant General |
| OAG | Organizational-Activity Game (psychology) |
| OAG | Oll An Gwella (Welsh: All the Best; men's acapella chorus) |
| OAG | Object Application Group |
| OAG | Office of the Advocate General for Scotland |
| OAG | Ordered Attribute Grammar |
| OAG | Ocean Applications Group |
| OAG | Optical Alignment Group |
| OAG | Other Administrative and General (costs) |