| Abbreviation | Definition |
|---|---|
| RRR | Repair or Replacement Requisition |
| RRRI | Rock Ridge Resources Inc |
| RRS | Recreation and Resort Specialists |
| RRS | Road Runner Sports |
| RRSI | Refrigeration Recruiting Service Inc. |
| RRT | Red River Telephone |
| RRX | Rapid Record Exchange |
| RRY | Raleigh Rock Yard |
| RRZ | Russell, Rea, & Zappala |
| RS | Radio Shack |
| RS | Reinhold Schlegelmilch, porcelain manufacturer |
| RS | Renn Sport |
| RSA | Reactor Studios Amsterdam |
| RSA | Restoration Sciences Academy |
| RSA | Rochester Software Associates |
| RSAA | Receptive Services Association of America |
| RSAC | Reliance Steel & Aluminum Company |
| RSADSI | RSA Data Security, Incorporated |
| RSAT | Remote Sensing Advanced Technology |
| RSB | Robert S. Baclawski Architects and Urban Planners |