| Acronym | Definition |
|---|
| SQI | Square Inch (measurement) |
| SQI | Software Quality Institute (Griffith University, Queensland, Australia) |
| SQI | Simple Query Interface |
| SQI | Service Quality Index |
| SQI | Soil Quality Institute |
| SQI | Service Quality Institute |
| SQI | Systematic Quality Improvement |
| SQI | Serial Quad I/O (4 bit multiplexed I/O serial interface flash memory device) |
| SQI | Software Quality Improvement |
| SQI | Super Quest Item (gaming) |
| SQI | Speech Quality Index |
| SQI | Submerged Quench Incinerator |
| SQI | Smiling Quietly Inside |
| SQI | Sterling/Rock Falls, Illinois (Airport Code) |
| SQI | Statement, Quotation, Inference (education) |
| SQI | Special Qualifications Identifier |
| SQI | Software Quality Consulting Institute Ltd (Hungary) |
| SQI | Space Quest I (game) |
| SQI | Short-Finned Squid (FAO species code) |
| SQI | Star Quality Images (Temecula, CA) |
| SQI | Software Quality Investment |
| SQI | Solution Quality Index |
| SQI | Surveys, Questionnaires, Interviews (data management firm; Canada) |
| SQI | Service Qualité Immobilier (French: Quality Real Estate Service) |