| Abbreviation | Definition |
|---|---|
| OWG | Outcomes Working Group |
| OWI | Office of War Information |
| OWI | Office of War Information [active in WW2] |
| OWM | Office of Wastewater Management ( EPA) |
| OWQ | Office of Water Quality |
| OWR | Office of Workforce Relations |
| OWS | Office of Workforce Security |
| OWS | Official Web Sites |
| OWW | Occupational Wage Workshop |
| OYC | Other Year Costs |
| OYP | One Year Plan |
| P | Permanent |
| P | Plenary |
| P | Population |
| P | President |
| P | Project |
| P | Proposition |
| P | Protocol |
| P&P | Policy and Procedure |
| P.I.O. | Public Information Officer |