| Acronym | Definition |
|---|
| SMRS➣Specialized Mobile Radio Service (FCC) |
| SMRS➣Southern Midget Racing Series (Sallisaw, OK) |
| SMRS➣Special Mission Radio System |
| SMRS➣Sonoma Mountain Repeater Society |
| SMRS➣Sustainability Management and Reporting System (Canada) |
| SMRS➣Social Model Recovery Systems, Inc |
| SMRS➣Southern Michigan Railroad Society Inc |
| SMRS➣Southampton Model Railway Society (UK; est. 1966) |
| SMRS➣Scott Mills Revenge Series (Blue Alert Productions films) |
| SMRS➣Scottish Military Re-enactment Society |