| Acronym | Definition |
|---|
| PSE | Puget Sound Energy |
| PSE | Please (logging abbreviation) |
| PSE | Philippine Stock Exchange |
| PSE | Precision Shooting Equipment |
| PSE | Photoshop Elements (Adobe image software) |
| PSE | Pseudoephedrine |
| PSE | Parti Socialiste Européen |
| PSE | Problem Solving Environment |
| PSE | Post-Secondary Education |
| PSE | Periodensystem |
| PSE | Process Systems Engineering |
| PSE | Personal and Social Education |
| PSE | Partido Socialista de Euskadi (Spain) |
| PSE | Producer Support Estimate |
| PSE | Polskie Sieci Elektroenergetyczne (Poland's National Grid Operator) |
| PSE | Plan de Sauvegarde de l'Emploi (French: Backup Plan for Employment; labor code) |
| PSE | Page Size Extensions |
| PSE | Pacific Stock Exchange |
| PSE | Pi Sigma Epsilon (Milwaukee, WI; est. 1951) |
| PSE | Porn Star Experience |
| PSE | Party of European Socialists |
| PSE | Portosystemic Encephalopathy (aka Portal Systemic Encephalopathy) |
| PSE | Power Source Equipment |
| PSE | Pale, Soft, and Exudative (condition affecting meat quality) |
| PSE | Palestine Securities Exchange |
| PSE | Paper, Science, and Engineering |
| PSE | Postal Stationery |
| PSE | Public Service Employment |
| PSE | Poverty and Social Exclusion (survey; UK) |
| PSE | Purchasing-Selling Entity |
| PSE | Portal Systemic Encephalopathy (aka Portosystemic Encephalopathy) |
| PSE | Personal Security Environment |
| PSE | Psychological Stress Evaluator (early form of voice lie detector) |
| PSE | Public Sector Enterprise |
| PSE | Photosensitive Epilepsy (visually stimulated seizure disorder) |
| PSE | Pidgin Sign English (now called Contact Language) |
| PSE | Prostate-Specific Antigen |
| PSE | Partido de los Socialistas Europeos (Spanish: Party of European Socialists) |
| PSE | Physical Security Equipment |
| PSE | Peculiar Support Equipment |
| PSE | Product Safety Engineering |
| PSE | Packet Switching Exchange |
| PSE | Product Support Engineer |
| PSE | Personal Safety Equipment |
| PSE | Public Sector Entity |
| PSE | Project Support Environment |
| PSE | Pre-Stamped Envelope |
| PSE | Persistent Storage Engine |
| PSE | Primary School Examination |
| PSE | Physiological Systems Experiment |
| PSE | Screen Enclosure (building code) |
| PSE | Power Supply Electronics |
| PSE | Power System Electronics |
| PSE | Ponce, PR, USA - Mercedita (Airport Code) |
| PSE | Pratt School of Engineering (Duke University; Durham, NC) |
| PSE | Power Systems Electric (Maryland) |
| PSE | Poor Self-Esteem |
| PSE | Planned Special Exposure |
| PSE | Pacific Science & Engineering Group |
| PSE | psychological operations support element (US DoD) |
| PSE | Plans, Specifications and Estimate |
| PSE | Parabolized Stability Equation |
| PSE | Preliminary Safety Evaluation |
| PSE | Plant Support Engineering |
| PSE | Planed Square Edge (timber/wood) |
| PSE | Point of Subjective Equivalence |
| PSE | Personnel Support Equipment |
| PSE | Power System Equipment |
| PSE | Patient Safety Event |
| PSE | Power Spectrum Estimation |
| PSE | PSYOP Support Element (US military) |
| PSE | Padnos School of Engineering (Grand Valley State University, Grand Rapids, Michigan) |
| PSE | Power Supply Enclosure |
| PSE | Paper Surface Efficiency |
| PSE | Physical Social Education |
| PSE | Pressure Safety Element (bursting disc) |
| PSE | Professional Software Engineer |
| PSE | Program Support Equipment |
| PSE | Power Source Element |
| PSE | Primitive Switching Element |
| PSE | Project System Engineer |
| PSE | Price Subject to Escalation |
| PSE | Principal Staff Element |
| PSE | Power Support Engineering |
| PSE | Professional Stamp Expertisers (Miami, FL) |
| PSE | Peer Sexuality Educators (Smith College) |
| PSE | Project Support Engineer |
| PSE | Prefix-Synchronized, Embedded-index (coding) |
| PSE | Personnel Subsystem Elements |
| PSE | Plan de Surveillance et de Suivi de l'Environnement (French) |
| PSE | Piano Strutturale di Emergenza |
| PSE | Program Subelement |
| PSE | Parachute Survival Ensemble |
| PSE | Priority Standardization Effort |
| PSE | Program System Evolution |
| PSE | Professional Server Engineer |
| PSE | Patch Set Exception (Oracle) |
| PSE | Protection Signalling Equipment |
| PSE | Preliminary Sales Estimate |
| PSE | Power Switching Element |
| PSE | Power Services Engineering (France) |
| PSE | Production Software Engineer |
| PSE | Plant Stanol Ester (margarine) |
| PSE | Price Search Engine (software) |
| PSE | Plain Small End (pipe design) |
| PSE | Public Safety Equipment (various companies) |
| PSE | Public Sector Employment |
| PSE | Park's Systems Engineering Co. (Kansas City, MO) |
| PSE | Power Sampling Electronics |
| PSE | Public Service Event (various organizations) |
| PSE | Personal Statement of Experience (Queen's University; Canada) |