| SMIS | Safety Management Information System 
| Others |
| SMIS | Sales Management Information System
| Others |
| SMIS | School of Management and Information Sciences
| Others |
| SMIS | Secure and Mobile Information Systems
| Others |
| SMIS | Security Management Information System
| Others |
| SMIS | Shelter Management Information System
| Others |
| SMIS | Simple Management Information System
| Others |
| SMIS | Smith McGehee Insurance Solutions
| Others |
| SMIS | Society for Management Information Systems
| Others |
| SMIS | Space Monitoring Information Support
| Others |
| SMIS | Specific Management Information Service
| Others |
| SMIS | Sri Mayapur International School
| Others |
| SMIS | St Michael Indian School
| Others |
| SMIS | St Michael's International School
| Others |
| SMIS | Stanford Molecular Imaging Scholars
| Others |
| SMIS | Storage Management Initiative Specification
| Others |
| SMIS | Storage Management Interface Specification
| Others |
| SMIS | Superior Mobile Insurance Solutions
| Others |
| SMIS | Surface Mining Information System
| Others |
| SMIS | Surveillance and Motorist Information System
| Others |
| SMIS | Sustainability Management Initiative System
| Others |
| SMIS | Suzuki Modular Instrument System
| Others |