| Acronym | Meaning |
| POB | Patrol Observation Base |
| POB | Percentage of Base |
| POB | Personnel on Board |
| POB | Persons On Board |
| POB | Pilot on Board |
| POB | Port of Baltimore (Baltimore, MD) |
| POB | Professional Oversight Board (UK FRC) |
| POB | Psychological Operations Battalion |
| POB | Public Order Battalion (Iraq) |