| PLR | Pupillary Light Reflex | 瞳孔光反射 |
| PLR | persistent light reaction | 持久光反应 |
| PLR | Preventive Law Reporter | 预防法报告员 |
| PLR | Positive Life Radio | 积极生活电台 |
| PLR | Private Letter Ruling | 私人信件裁决 |
| PLR | Physician Labeling Rule | 医师标签规则 |
| PLR | Private Label Rights | 私有标签权利 |
| PLR | Partitio Liberal-Radicale Svizzero (Radical Free Democratic Party Switzerland) | 自由党Radicale Svizzero（激进自由民主党瑞士） |
| PLR | Provider of Last Resort (electric utility) | 最后度假酒店（电力设施）供应商 |
| PLR | Past Life Regression | 前世回归 |
| PLR | Packet Loss Rate | 数据包丢失率 |
| PLR | Pulse Link Repeater | 脉冲链路中继器 |
| PLR | Proportional Loss Rate | 比例损失率 |
| PLR | Prime Lending Rate | 最优惠贷款利率 |
| PLR | Private Letter Ruling (IRS) | 私人信件裁决（IRS） |
| PLR | Public Lending Right | 公共贷款权 |
| PLR | Package-Level Reliability | 包装级别可靠性 |
| PLR | Pass Liaison Representative | 通行证联络代表 |
| PLR | Philippine Liberation Ribbon | 菲律宾解放丝带 |
| PLR | PolskÁ LidovÁ Republika (People's Republic of Poland) | PolskÁ LidovÁ Republika (People's Republic of Poland) |
| PLR | Preliminary Loss Report (US Army) | 初步损失报告（美国陆军） |
| PLR | PatÁ en La Raja | PatÁ en La Raja |
| PLR | Pupillary Light Response | 瞳孔光反应 |
| PLR | Public Liberty Radio | 公共自由电台 |
| PLR | Prequential Likelihood Ratio | 后果似然比 |
| PLR | Packet Loss Resilience | 丢包恢复能力 |