| PLO | Palestine Liberation Organization | 巴勒斯坦解放组织 |
| PLO | Port Lincoln, South Australia, Australia - Port Lincoln (Airport Code) | 澳大利亚南澳大利亚州林肯港-林肯港（机场代码） |
| PLO | platelet lipoxygenase | 血小板脂氧合酶 |
| PLO | Please Leave On | 请保持打开 |
| PLO | Planned Order | 计划订单 |
| PLO | Public Limit Order | 公共限价令 |
| PLO | Please Leave Ok? | 请离开好吗？ |
| PLO | Orthodox Liberal Party | 东正教自由党 |
| PLO | Peoples Liberation Organization | 人民解放组织 |
| PLO | Port Lincoln, South Australia, Australia | 林肯港，南澳大利亚州，澳大利亚 |
| PLO | Pretty Long Opinions | 相当长的意见 |
| PLO | Plus Libyan Orders | 加上利比亚订单 |
| PLO | Plant Liberation Organization | 植物解放组织 |
| PLO | Physical Layer Operations | 物理层操作 |
| PLO | pharyngo-laryngo-oesophagectomy | 咽喉食管切除术 |
| PLO | Permanent Latrine Orderly | 有序永久厕所 |
| PLO | Permanent Latrine Officer | 常驻厕所官员 |
| PLO | Public Land Order | 公共土地秩序 |
| PLO | Phase-Locked Oscillator | 锁相振荡器 |
| PLO | Post Layout Optimization | 布局后优化 |
| PLO | Pillow | 枕头 |
| PLO | Pacific Launch Operation | 太平洋发射操作 |
| PLO | Project Liaison Office | 项目联络办公室 |
| PLO | Patrol Leader's Order (US DoD) | 领导者的顺序(巡逻国防部) |
| PLO | Prescribed Learning Outcome | 规定的学习结果 |
| PLO | Please Leave On/Open | 请开/打开 |
| PLO | Platform Low | 平台低 |
| PLO | Pot Limit Omaha (poker variation) | 奥马哈极限（扑克变化） |
| PLO | Parts Left Over (automotive repair industry) | 遗留零件（汽车维修行业） |
| PLO | Pluronic Lecithin Organogel | Pluronic卵磷脂有机凝胶 |
| PLO | Publicity Liaison Officer | 宣传联络官 |
| PLO | Pre-Light Off | 预点火关闭 |
| PLO | Partnership Liaison Office | 伙伴关系联络办公室 |
| PLO | Pay Liaison Officer | 薪酬联络官 |