| Acronym | Definition |
|---|
| SMDI➣Steel Market Development Institute (est. 2008) |
| SMDI➣Simplified Message Desk Interface |
| SMDI➣Simplified Message Desk Interface (telephone network service, customer interface specification) |
| SMDI➣Society for Muscular Dystrophy Information International (Bridgewater, Nova Scotia, Canada) |
| SMDI➣Synectics for Management Decisions, Inc. (Arlington, VA) |
| SMDI➣Station Message Desk Interface |
| SMDI➣SCSI Musical Data Interchange |
| SMDI➣Storage Module Disk Interconnect |
| SMDI➣Student Microfinance and Development Initiative (UK; est. 2008) |
| SMDI➣Scotia Mcleod Direct Investing (Canada) |