| Abbreviation | Definition |
|---|---|
| PCWG | Power Curve Working Group |
| PCWG | Project Cost Working Group |
| PCWG | Prostate Cancer Working Group |
| PCWG | Protection Cluster Working Group1 |
| PEWG | Pan European Working Group |
| PEWG | Patient Experience Working Group |
| PEWG | Peat Expert Working Group |
| PEWG | Pointer Events Working Group |
| PEWG | Political Ecology Working Group |
| PEWG | Provincial Energy Working Groups |
| PEWG | Public Engagement Working Group |
| PFTA | Please Find The Attached |
| PGWG | Planetary Geomorphology Working Group |
| PLWG | Peat Land Working Group |
| PLWG | Private Law Working Group |
| PLWG | Producer Licensing Working Group |
| PUDA | Pueblo Depot Activity (Pueblo, CO) |
| PWG | Preservation Working Group |
| PWG | Production Working Group |
| PWGT | Police Working Group on Terrorism |