| Acronym | Definition |
|---|
| APSS | American Public School System |
| APSS | Astrophysics and Space Science (Springer) |
| APSS | Academic Programs and Student Services (various schools) |
| APSS | Avaya Professional Sales Specialist |
| APSS | Associated Professional Sleep Societies |
| APSS | Association of Publishers for Special Sales (formerly Small Publishers Association of North America) |
| APSS | Asylum Pre-Screening System (database) |
| APSS | Association of Pre-Sacral Spine Surgeons |
| APSS | Animal Product Safety Service (American Society for the Prevention of Cruelty to Animals) |
| APSS | Airline Passengers for Safer Skies |
| APSS | Aristo Parcel Shipping System |
| APSS | Associate Professional Soil Scientist |
| APSS | Austrian Payment System Services GmbH (Vienna, Austria) |
| APSS | Automatic Protection Switching System |
| APSS | Aviation Preservation Society of Scotland |
| APSS | Avant-Projet Sommaire Simplifié (French: Simplified Preliminary Draft Summary) |
| APSS | American Polled Shorthorn Society |
| APSS | Automated Program Status System |
| APSS | Automated Procurement System Software |
| APSS | American Physiological Sleep Society |