PYB
| Acronym | Definition |
|---|---|
| PYB | Protect Your Bubble |
| PYB | Plas Y Brenin (UK) |
| PYB | Pittsburgh Youth Ballet (Pittsburgh, PA) |
| PYB | Post Your Book (student expression) |
| PYB | Pacific Youth Bureau (South Pacific Commission) |
| PYB | Pick Your Brain |
| PYB | Posey Yuppie Biker |
| PYB | Posey Yuppie Bastard (aka RUB) |
| PYB | Pennzoil Yellow Bottle (automotive oil) |