| Acronym | Definition |
|---|
| PLO | Palestine Liberation Organization |
| PLO | Plano (Amtrak station code; Plano, IL) |
| PLO | Pillow |
| PLO | Pot Limit Omaha (poker variation) |
| PLO | Phase-Locked Oscillator |
| PLO | Pluronic Lecithin Organogel |
| PLO | Poly-L-Ornithine (synthetic polypeptide) |
| PLO | Prison Law Office (California) |
| PLO | Primary Learning Outcome |
| PLO | Port Lincoln, South Australia, Australia - Port Lincoln (Airport Code) |
| PLO | Public Land Order |
| PLO | Parts Left Over (automotive repair industry) |
| PLO | Project Liaison Office |
| PLO | Post Layout Optimization |
| PLO | Permanent Latrine Orderly :-) |
| PLO | Prescribed Learning Outcome |
| PLO | Pacific Launch Operation |
| PLO | Platoon Leader's Order (US Navy) |
| PLO | Platform Low |
| PLO | Permanent Latrine Officer :-) |
| PLO | Peace, Love, Out |
| PLO | Pay Liaison Officer |
| PLO | Physical Layer Operations |
| PLO | Publicity Liaison Officer |
| PLO | Partnership Liaison Office |
| PLO | Please Leave On/Open |
| PLO | Pre-Light Off |
| PLO | Patrol Leader's Order (US DoD) |