| Rank | Abbreviation | Meaning |
|---|
| ***** | SMRL | Short Message Relay Layer
| |
| **** | SMRL | Social Media Research Lab
| |
| **** | SMRL | Sunil Mantri Realty Ltd
| |
| **** | SMRL | Single Master Reference List
| |
| **** | SMRL | Southern Maryland Regional Library
| |
| **** | SMRL | Semantic Markup Rule Language
| |
| *** | SMRL | Seaconsult Marine Research Ltd.
| |
| *** | SMRL | Stanford Magnetic Resonance Laboratory
| |
| *** | SMRL | Spock Mountain Research Labs
| |
| *** | SMRL | Sports Medicine Research Laboratory
| |
| *** | SMRL | Simtrol Inc New (OTC Bulletin Board [OTCBB])
| |
| *** | SMRL | South Metropolitan Regional Leadership
| |
| *** | SMRL | Surface Mining Regulation Litigation
| |
| *** | SMRL | Sequim Marine Research Laboratory
| |
| ** | SMRL | South Mississippi Regional Library
| |
| ** | SMRL | Sudan Medical Research Laboratory
| |
| ** | SMRL | Seitz Materials Research Laboratory
| |