| Acronym | Definition |
|---|
| PSL | Premier Soccer League |
| PSL | Polskie Stronnictwo Ludowe (Polish Peoples Party, 1895) |
| PSL | Permanent Seat License (arena ticketing) |
| PSL | Property Specification Language |
| PSL | Party for Socialism and Liberation |
| PSL | Process Specification Language |
| PSL | Problem Statement Language |
| PSL | Priority Substances List |
| PSL | Physical Science Laboratory (New Mexico State University) |
| PSL | Parti Social Libéral (French: Social Liberal Party) |
| PSL | Parallel Strand Lumber |
| PSL | Projective Special Linear (mathematics) |
| PSL | Preferred Supplier List |
| PSL | Professional Support Lawyer |
| PSL | Photostimulated Luminescence |
| PSL | Producteurs Suisses de Lait |
| PSL | Public Software Library |
| PSL | Portable Standard LISP |
| PSL | Physical Sciences Laboratory |
| PSL | Public School League |
| PSL | Produttori Svizzeri di Latte |
| PSL | PATROL Script Language (BMC Software) |
| PSL | Pressure Sensitive Label |
| PSL | Product Specification Level |
| PSL | Propulsion Systems Laboratory |
| PSL | Path Switch LSR (Label Switched Router) |
| PSL | Pusca Semiautomata cu Luneta (Romanian: semi-automatic rifle with scope) |
| PSL | Peak Sidelobe Level |
| PSL | Pressure Safety Low |
| PSL | Path Signal Label |
| PSL | Protection Switch LSR (Label Switched Router) |
| PSL | Perverse Sexual Lust |
| PSL | Poly-Styrene Latex |
| PSL | Port of South Louisiana |
| PSL | Passenger Service License |
| PSL | Parts Selection List |
| PSL | Prepaid Service Logic (GSM networks) |
| PSL | POEMS Specification Language |
| PSL | Protection of the Sea Levy |
| PSL | Percent of the Speed of Light (Andromeda) |
| PSL | parallel track single-unit long-range aid to navigation (LORAN) (US DoD) |
| PSL | Plant Site Logistics |
| PSL | Polar Surface Layer |
| PSL | Pot Smoking Loser |
| PSL | Program Support Logistics |
| PSL | Probability of Synchronization Loss |
| PSL | Power Signal Layout (telecommunications) |
| PSL | Physical Sublayer (signaling) |
| PSL | Publication Status List |
| PSL | Program Support Letter/Library |
| PSL | Protected Dervices List |