PSUB
| Acronym | Definition |
|---|---|
| PSUB | Packed Subtract |
| PSUB | Purdue Student Union Board (Purdue University) |
| PSUB | Personal Submersible (homebuilt experimental submarine) |
| PSUB | Piston-Supported Upper Bearing |
| PSUB | Penguin Student Union Building (Clark College; Vancouver, WA) |