SMI
- Jerry Maguire
- Management Data Input/Output
- SAMI
- Samos International Airport
- SensoMotoric Instruments
- Sergeant major instructor
- Serious mental illness
- Service Measurement Index
- Shanghai Municipal Investment Group
- Shape Modeling International
- Shepardson Microsystems
- Silicon Motion
- Social media intelligence
- Sony Music Entertainment
- Sony Music India
- Speedway Motorsports
- St. Michael's Institution
- Storage Management Initiative - Specification
- Structure of Management Information
- Support for Mortgage Interest
- Sustainable Minerals Institute
- Swiss Market Index
- Synchronized Multimedia Integration Language
- System Management Mode
- Vertico SMI
- Xeon