| Acronym | Definition |
|---|
| PACS | Picture Archiving and Communication System (DICOM) |
| PACS | Pacte Civil de Solidarité (French: Civil Pact of Solidarity) |
| PACS | Philanthropy and Civil Society (Stanford University; Stanford, CA) |
| PACS | Public Affairs and Community Service |
| PACS | Physics and Astronomy Classification Scheme |
| PACS | Primary Angle Closure Suspect (eyes) |
| PACS | Picture Archive and Communications System |
| PACS | Picture Archiving Computer Systems |
| PACS | Personal Access Communications System |
| PACS | Photoconductor Array Camera and Spectrometer (telescope) |
| PACS | Public-Access Computer Systems Review (publication; University of Houston Libraries; Houston, TX) |
| PACS | Personal Access Communications System (Bellcore, SSC) |
| PACS | Procurement and Contracting Services (University of Arizona) |
| PACS | Pan American Climate Studies |
| PACS | Physical Access Control System |
| PACS | Patto Civile di Solidarietà (Italian: civil pact of solidarity; gay civil union) |
| PACS | Philadelphia Academy Charter School (Pennsylvania) |
| PACS | Poorest Areas Civil Society (India) |
| PACS | Primary Airport Control Station (airport survey marker) |
| PACS | PATRIOT Act Communication System |
| PACS | Partial Anterior Circulation Syndrome (medical) |
| PACS | Provisional Army of the Confederate States |
| PACS | Pakistani-American Cultural Society (various locations) |
| PACS | Pennyrile Allied Community Services (Hopkinsville, Kentucky) |
| PACS | Picture Archival Computer System |
| PACS | Phoenixville Area Community Services (Pennsylavnia) |
| PACS | Post-Acute Care Services |
| PACS | Programmable Armament Control Set |
| PACS | Pathogen Asset Control System (US Defense Threat Reduction Agency) |
| PACS | Pacific Area Cataloging System |
| PACS | Process and Control Systems, Inc. (electrical control panels) |
| PACS | Post Adoption Counseling Services (New Jersey) |
| PACS | Programmable Armament Control System |
| PACS | Personal Advanced Communications Systems |
| PACS | Polar Acquisition and Command System |
| PACS | Procurement Authorities Control System |
| PACS | Plotting & Combat Summary Display |
| PACS | Project Administration and Costing System (Sprint) |
| PACS | Personal Alarm Call Service (Australia) |
| PACS | Physical Access - Cleaning and Sanitizing |
| PACS | Parental Account of Symptoms |
| PACS | Pediatric Activity Card Sort (occupational therapy assessment tool) |