| Abbreviation | Definition |
|---|---|
| PADPAO | Philippine Association of Detective and Protective Agency Operators, Inc. |
| PAEC | Process Analytical Engineering Contractor |
| PAFI | Philippine Automotive Federation Inc |
| PAG | Penske Auto Group |
| PAGCOR | Philippine Amusement and Gaming CORporatrion |
| PAHAL | Pak Air Helio Air Lifting |
| PAHC | Phibro Animal Health Corporation |
| PAHI | Pan America Hyperbarics Inc |
| PAI | Parrish Associates, Inc. |
| PAI | Parts Associates Inc |
| PAI | Pharmaceutical Associates Inc |
| PAI | Phoenix Alternatives Inc |
| PAI | Piedmont Associated Industries |
| PAI | Plan Administrators Inc |
| PAI | Planned Administrators Inc |
| PAI | Policy Analysis Inc |
| PAI | Professional Analysis Inc |
| PAIB | Professional Accountants In Business |
| PAIC | Public Alliance Insurance Coverage Fund |
| PAIC | Punjab Agro Industries Corporation |