PBX
| Acronym | Definition |
|---|---|
| PBX | Private Branch Exchange (private telephone switchboard) |
| PBX | Private Branch Exchange |
| PBX | Public Branch Exchange (public telephone switchboard) |
| PBX | Pittsburgh Business Exchange (Pittsburgh, PA) |
| PBX | Plastic Bonded Explosive |
| PBX | Prompt by Example |
| PBX | Polymer Bonded Explosives |
| PBX | Pittsburgh Builders Exchange (Pennsylvania) |