| Abbreviation | Definition |
|---|---|
| PMSL | Precision Marine Survey Ltd |
| PMSL | Pride Management Services, Limited |
| PMSL | Progressive Management Solutions, LTD. |
| PMTC | Peace Mountain Theatre Company |
| PMU | ParaMedics Unlimited |
| PMU | Project Management Unit |
| PMW | Patmont Motor Werks |
| PMW | Python MegaWidgets |
| PMX | Paramax Productions, Inc. |
| PMY | Power & Motor Yacht |
| PN | Progressive Networks |
| PN | Prosperity Networks |
| PNA | Pacific Northwest Associates, LLC |
| PNC | Pittsburgh National Corporation |
| PNC | Power Reactor and Nuclear Fuel Development Corporation, Japan |
| PNC | Pritish Nandy Communications |
| PND | Phoenix Net Distributors, Inc. |
| PND | Pick Deposit |
| PND | Pick & Deposit |
| PNDC | Penn Northwest Development Corporation |