| Acronym | Definition |
|---|
| PSL | Pakistan Super League (cricket; est. 2015) |
| PSL | Premier Soccer League |
| PSL | Port Saint Lucie (Florida) |
| PSL | Paid Sick Leave |
| PSL | Priority Sector Lending (finance) |
| PSL | Polskie Stronnictwo Ludowe (Polish Peoples Party, 1895) |
| PSL | Projeto Software Livre (Portuguese: Free Software Project; Brazil) |
| PSL | Personal Seat License (season sporting event tickets) |
| PSL | Party for Socialism and Liberation |
| PSL | Project Space Leeds (UK) |
| PSL | Plib Scripting Language |
| PSL | Parallel Simulation Language |
| PSL | Parallel Systems Laboratory |
| PSL | Platform Support Layer |
| PSL | Physical Security Layer |
| PSL | Portable Sound Library |
| PSL | Public Source License |
| PSL | Protected Services List |
| PSL | Protocol Stack Layer |
| PSL | Protected Server Library |
| PSL | Problem Statement Language |
| PSL | Payment Systems Ltd. |
| PSL | Parallel Strand Lumber |
| PSL | Power Systems Laboratory (US NASA) |
| PSL | Property Specification Language |
| PSL | Posted Speed Limit |
| PSL | Parti Social Libéral (French: Social Liberal Party) |
| PSL | Permanent Seat License (arena ticketing) |
| PSL | Phoenix School of Law (Arizona) |
| PSL | Process Specification Language |
| PSL | Priority Substances List |
| PSL | Physical Science Laboratory (New Mexico State University) |
| PSL | Public School League |
| PSL | Private Sector Leasing (Edinburgh, Scotland, UK) |
| PSL | Permissible Sound Level (audiology) |
| PSL | Projective Special Linear (mathematics) |
| PSL | Preferred Supplier List |
| PSL | Professional Support Lawyer |
| PSL | Photostimulated Luminescence |
| PSL | Producteurs Suisses de Lait |
| PSL | Public Service Leadership (various locations) |
| PSL | Public Safety Leadership (various organizations) |
| PSL | Public Street Lighting (various locations) |
| PSL | Portable Standard LISP |
| PSL | Public Software Library |
| PSL | Professional Sound and Lighting (various locations) |
| PSL | Product Service Line (various companies) |
| PSL | Professional Standards Legislation (Australia) |
| PSL | Pumpkin Spice Latte (beverage) |
| PSL | Physical Sciences Laboratory |
| PSL | Panasonic Singapore Laboratories Pte. Ltd. (research) |
| PSL | Police School Liaison (various locations) |
| PSL | Product Support Lead (various companies) |
| PSL | PATROL Script Language (BMC Software) |
| PSL | Produttori Svizzeri di Latte |
| PSL | Photographic Science Laboratory (US Navy) |
| PSL | Pressure Sensitive Label |
| PSL | Parallel Track Single-Unit Long-Range Aid to Navigation (Long Range Navigation; US DoD) |
| PSL | Peak Sidelobe Level |
| PSL | Product Specification Level |
| PSL | Propulsion Systems Laboratory |
| PSL | Point Source Load (waste treatment) |
| PSL | Price Support Loan |
| PSL | Port of South Louisiana |
| PSL | Prolonged Study Leave (UK) |
| PSL | Path Switch LSR (Label Switched Router) |
| PSL | Passive Streaming Library (Check Point Software Technologies) |
| PSL | Pressure Safety Low |
| PSL | Population Services Lanka (Sri Lanka) |
| PSL | Pusca Semiautomata cu Luneta (Romanian: Semi-Automatic Rifle with Scope) |
| PSL | Pearl Science Laboratory (Japan) |
| PSL | Protection Switch LSR (Label Switched Router) |
| PSL | Perverse Sexual Lust |
| PSL | Poly-Styrene Latex |
| PSL | Path Signal Label |
| PSL | Passenger Service License |
| PSL | Parts Selection List |
| PSL | POEMS Specification Language |
| PSL | Prepaid Service Logic (GSM networks) |
| PSL | Protection of the Sea Levy |
| PSL | Plant Site Logistics |
| PSL | Polar Surface Layer |
| PSL | Pot Smoking Loser |
| PSL | Percent of the Speed of Light (Andromeda) |
| PSL | Program Support Logistics |
| PSL | Probability of Synchronization Loss |
| PSL | Program Support Letter/Library |
| PSL | Protected Dervices List |
| PSL | Publication Status List |
| PSL | Physical Sublayer (signaling) |
| PSL | Power Signal Layout (telecommunications) |
| PSL | Praat Scripting Language (phonetics computer program) |
| PSL | Pina Sri Lanka |