| Abbreviation | Definition |
|---|---|
| SMH | Small Myers Hughes |
| SMH | Systems Material Handling |
| SMHC | Southern Mountain Horse Company |
| SMHD | Smoky Mountain Harley-Davidson |
| SMHDC | Southern Mutual Housing Development Corporation |
| SMHHF | Skull Mountain Haunted House and Forest |
| SMHI | SEACOR Marine Holdings Inc |
| SMHL | Sierra Minerals Holdings Ltd |
| SMI | Saturday Music, Inc. |
| SMI | Schott Musik International |
| SMI | Seedorff Masonry Inc |
| SMI | Small and Medium Industries |
| SMI | Snow Machines Inc |
| SMI | Specialty Measurements Inc |
| SMI | Specialty Measurements, Inc. |
| SMI | Specialty Measurements, Incorporated |
| SMI | Sports Management International |
| SMI | Sun Microsystems, Inc. |
| SMI | Systems and Methods Inc |
| SMI | Systems Methods Inc |