Found 5 full forms for SMSI
| Term | Full Form | Category |
|---|---|---|
| SMSI | Simplified Message Service Interface 
| Others |
| SMSI | Sipaliwini, Brazil
| Others |
| SMSI | Standard Manned Space flight Initiator
| Others |
| SMSI | Strong Metal Support Interaction
| Others |
| SMSI | Strong Metal-Support Interaction
| Others |