| Abbreviation | Definition |
|---|---|
| SMIC | Swedish Music Information Center |
| SMM | Shareware Music Machine |
| SMM | Studio Metal Master |
| SMMF | Streetcar Mobile Music Fest |
| SMN | Scratch Music Network |
| SMO | Seattle Modern Orchestra |
| SMOJ | Sony Music Online Japan |
| SMOR | Symphony Musicians of Richmond |
| SMPA | Swiss Music Pedagogic Association |
| SMPC | Society for Music Perception and Cognition |
| SMPO | San Miguel Philharmonic Orchestra |
| SMS | Save My Soul |
| SMSB | Sheet Music Stand Bag |
| SMSO | Southern Miss Symphony Orchestra |
| SMSO | Southwest Michigan Symphony Orchestra |
| SMTD | School of Music Theatre and Dance |
| SMTF | Simonds Music and Technology Foundation |
| SMTG | Staines Musical Theatre Group |
| SMTI | Summer Music Theatre Institute |
| SMTT | Sunshine Music Tours and Travels |