| Acronym | Definition |
|---|
| SPAR | School Public Accountability Report |
| SPAR | Semper Paratus (Latin: Always Prepared; USCG motto) |
| SPAR | Springfield Armory National Historic Site (US National Park Service) |
| SPAR | Samenwerken Profiteren Allen Regelmatig (European supermarket chain) |
| SPAR | Space Radar |
| SPAR | Society of Photographers and Artists Representatives |
| SPAR | Space Processing Applications Rocket |
| SPAR | Status of Permit Application Report |
| SPAR | Solid State Phased Array Radar |
| SPAR | Seagoing Platform for Acoustic Research |
| SPAR | Standard Payload Assurance Requirements |
| SPAR | Science, Philosophy and Religion (symposium) |
| SPAR | Spatial Pattern Analysis and Research |
| SPAR | Space Power Advanced Reactor |
| SPAR | Service Provider Access Requirements |
| SPAR | Stock Point ADP Replacement |
| SPAR | Standards for Protection Against Radiation |
| SPAR | Structural Performance and Resizing |
| SPAR | Specialist Principal Activity Reporting (financial) |
| SPAR | Strategic Planning, Analysis and Realignment Office |
| SPAR | Special Aerodrome Report |
| SPAR | Structural Performance Analysis and Redesign |
| SPAR | Skins & Punks Against Racism |
| SPAR | Special Progressive Aircraft Re-Work |
| SPAR | System Product Anomaly Report |
| SPAR | Single-Phase Autoreclosure |
| SPAR | Sailor Performance Appraisal Report (Royal Australian Navy) |
| SPAR | Slight Precision Approach Radar (aviation) |