| Abbreviation | Definition |
|---|---|
| PRUMA | Puerto Rican Union of Mutual Aid, Inc. |
| PRV | Perceptual Research Ventures, LLC |
| PRV | Peugeot Renault Volvo |
| PRX | Pennsylvania Radio Exchange |
| PRZ | Pazsaz Entertainment Network |
| PRZ | Prescription Root Zone Consulting |
| PRZ | Proze Rechnerverbund Zentrale |
| PS | Power Solutions |
| PS | Prestwood Software |
| PSA | Professional Sport Authenticators |
| PSAA | Peach State Auto Auction |
| PSAA | Prince Sultan Aviation Academy |
| PSAC | Pugets Sound Agricultural Company |
| PSAI | Philippine Statistical Association Inc |
| PSAI | Professional Safety Associates Inc |
| PSB | Pet Shop Boys |
| PSBD | Pugsley Sidwell Business Development Ltd |
| PSC | Pataki Seidenberg Company |
| PSC | Personal Service Corporations |
| PSC | Philadelphia Sign Company |