| Acronym | Definition |
|---|
| OOB | Out-Of-Band |
| OOB | Old Orchard Beach (Maine) |
| OOB | Out-Of-Bounds |
| OOB | Out-of-Bag (machine learning) |
| OOB | Out of Browser (Microsoft Silverlight) |
| OOB | Order Of Battle |
| OOB | Out of Body (experience) |
| OOB | Out of Band |
| OOB | Out of the Box |
| OOB | Out of Box (software implementation projects) |
| OOB | Out of Bed |
| OOB | Off Off Broadway |
| OOB | ODBC-ODBC Bridge |
| OOB | Out of Bottle |
| OOB | Out-Of-Business |
| OOB | Off Our Backs (feminist newsjournal, Washington, DC) |
| OOB | Out of Battery (improper weapon discharge) |
| OOB | Out-Of-Balance |
| OOB | Out of Breath |
| OOB | Out-Of-Bandwidth |
| OOB | Out-of-Base |
| OOB | Out Of Building |
| OOB | Open of business |
| OOB | Operations Operating Budget |
| OOB | Open Order Book (finance) |