| Acronym | Definition |
|---|
| PPO | Personal Protection Order (law) |
| PPO | Polyphenylene Oxide |
| PPO | Polypropylene Oxide |
| PPO | Public Policy Office |
| PPO | Pension Payment Order (India) |
| PPO | Pédagogie par Objectifs (French: Teaching Objectives) |
| PPO | Professional Photographers of Ontario |
| PPO | Professional Photographers of Oregon |
| PPO | Personal Property Office (US Navy) |
| PPO | Plant PowerOps (software) |
| PPO | Physical Plant Office |
| PPO | Professional Photographers of Ohio |
| PPO | Pre-Production Operations |
| PPO | Probation and Parole Officer |
| PPO | Prior Permission Only |
| PPO | Probationary Police Officer (NYPD) |
| PPO | Prolific & Other Priority Offenders (UK) |
| PPO | Pilot/Payload Operator |
| PPO | Professional Photographers of Oklahoma |
| PPO | Pollution Prevention Officer (Canada) |
| PPO | Preliminary Protective Order |
| PPO | Product Process Organization |
| PPO | Post Production Option (manufacturing add-on) |
| PPO | Project Purchasing Officer |
| PPO | Parole and Probation Officer |
| PPO | Partnership Project Office |
| PPO | Pupil Personnel Office (schools) |
| PPO | Postal Police Officer |
| PPO | Principal Period of Operation |
| PPO | Peninsula Pops Orchestra (San Francisco, CA) |
| PPO | Programmable Pulse Output |
| PPO | Please Piss Off |
| PPO | Proposal Production Office |
| PPO | Program Planning Objectives |
| PPO | Projected Program Objective |
| PPO | Permanently Pissed Off |
| PPO | Personal Performance Objective |
| PPO | Public Purchasing Offer |
| PPO | Pre-Placement Offer (employment) |
| PPO | Pure Plantaardige Olie (Dutch: Pure Vegetable Oil) |
| PPO | Preferred Provider Organization |
| PPO | Public Prosecutions Office (various locations) |
| PPO | Police Provincial Office (Philippines) |
| PPO | Please Pass On |