| PSL | Partido Social Liberal | 社会自由党 |
| PSL | Product Safety Labs | 产品安全实验室（与药物有关的研究与测试服务） |
| PSL | Physical Sciences Laboratory | 物理科学实验室 |
| PSL | Producteurs Suisses de Lait | 制片人Suisses de Lait |
| PSL | Produttori Svizzeri di Latte | Produttori Svizzeri di Latte公司 |
| PSL | Pressure Safety Low | 压力安全低 |
| PSL | Product Specification Level | 产品规范级别 |
| PSL | Parti Social LibÉral (French: Social Liberal Party) | Parti Social LibÉral (French: Social Liberal Party) |
| PSL | Permanent Seat License (arena ticketing) | 永久席位许可证（竞技场门票） |
| PSL | Problem Statement Language | 问题陈述语言 |
| PSL | Path Switch LSR (Label Switched Router) | 路径交换LSR（标签交换路由器） |
| PSL | Process Specification Language | 工艺规范语言 |
| PSL | Public Software Library | 公共软件库 |
| PSL | Property Specification Language | 属性规范语言 |
| PSL | Portable Standard LISP | 便携式标准LISP |
| PSL | Party for Socialism and Liberation | 社会主义和解放党 |
| PSL | Premier Soccer League | 英超足球联赛 |
| PSL | Passenger Service License | 客运服务许可证 |
| PSL | Port of South Louisiana | 南路易西安那港 |
| PSL | Plant Site Logistics | 工厂现场物流 |
| PSL | Psychometric Services, Ltd. | 心理测量服务有限公司。 |
| PSL | Physics Soccer League | 物理足球联赛 |
| PSL | Porous Si Layer | 多孔硅层 |
| PSL | Personal Stop Loss | 个人止损 |
| PSL | Perverted Sexual Lust | 变态的性欲 |
| PSL | Posted Speed Limit | 发布的速度限制 |
| PSL | Photo-Stimulated Luminescence | 光激发发光 |
| PSL | Priority Substances List | 优先物质清单 |
| PSL | Path Signal Label | 路径信号标签 |
| PSL | POEMS Specification Language | POEMS规范语言 |
| PSL | Polskie Stronnictwo Ludowe (Polish Peoples Party, 1895) | 波兰人民党，1895年） |
| PSL | Power Signal Layout (telecommunications) | 电力信号布局（电信） |
| PSL | partial-thickness skin loss | 局部厚度表皮损失 |
| PSL | Physical Sublayer (signaling) | 物理子层（信令） |
| PSL | potassium,sodium chloride,sodium lactate(solution) | 钾、氯化钠、乳酸钠（溶液） |
| PSL | Personal Seat License | 个人座位许可证 |
| PSL | Professional Support Lawyer | 专业支持律师 |
| PSL | Permanent Seat License | 永久席位许可证 |
| PSL | Polar Surface Layer | 极性表面层 |
| PSL | Pot Smoking Loser | 吸大麻的失败者 |
| PSL | Perth, Scotland | 苏格兰珀斯 |
| PSL | Products And Services Listing | 产品和服务列表 |
| PSL | Parallel Strand Lumber | 平行股木材 |
| PSL | Percent of the Speed of Light (Andromeda) | 光速百分比（仙女座） |
| PSL | Perverse Sexual Lust | 变态的性欲 |
| PSL | Protected Dervices List | 受保护的设备列表 |
| PSL | PolyStyrene Latex | 聚苯乙烯胶乳 |
| PSL | Propulsion Systems Laboratory | 推进系统实验室 |
| PSL | Program Support Logistics | 项目支持后勤 |
| PSL | Pressure Sensitive Label | 压敏标签 |
| PSL | PATROL Script Language (BMC Software) | PATROL脚本语言（BMC软件） |
| PSL | Peak Sidelobe Level | 峰值旁瓣电平 |
| PSL | Public School League | 公立学校联盟 |
| PSL | Probability of Synchronization Loss | 同步丢失概率 |
| PSL | Prepaid Service Logic (GSM networks) | 预付费业务逻辑（GSM网络） |
| PSL | parallel track single-unit long-range aid to navigation (LORAN) (US DoD) | 平行轨道单单元远程导航辅助系统（LORAN）（美国国防部） |
| PSL | Photostimulated Luminescence | 光激发发光 |
| PSL | Parts Selection List | 零件选择列表 |
| PSL | Program Support Letter/Library | 程序的支持信/图书馆 |
| PSL | Poly-Styrene Latex | 聚苯乙烯胶乳 |
| PSL | Publication Status List | 发布状态列表 |
| PSL | Protection of the Sea Levy | 海洋保护税 |
| PSL | Projective Special Linear (mathematics) | 射影特殊线性（数学） |
| PSL | Protection Switch LSR (Label Switched Router) | 保护交换机LSR（标签交换路由器） |
| PSL | Pusca Semiautomata cu Luneta (Romanian: semi-automatic rifle with scope) | 普斯卡半自动机cu Luneta（罗马尼亚语：带瞄准镜的半自动步枪） |
| PSL | Physical Science Laboratory (New Mexico State University) | 物理科学实验室（新墨西哥州立大学） |
| PSL | Preferred Supplier List | 首选供应商列表 |