| Abbreviation | Definition |
|---|---|
| RDIB | Reading International, Inc. Class B |
| RDL | Riddell Sports, Inc. |
| REF | Refac |
| REX | REXX Environmental Corporation |
| RGI | Randers Killam Group, Inc. |
| RH | Rottlund, Inc. |
| RH | Rottlund, Incorporated |
| RHT | Richton International Corporation |
| RIC | Richmont Mines, Inc. |
| RIV | Riviera Holdings Corporation |
| RJI | Reeds Jewelers, Inc. |
| RKE | Cap Rock Energy Corporation |
| RMB | Ren Men Bi |
| RMI | Rotonics Manufacturing, Inc. |
| ROG | Rogers Corporation |
| ROM | Rio Algom, LTD. |
| RPD | Dispatch Management Services Corporation |
| RPG | Role Playing Games |
| RPP | Stonehaven Realty Trust |
| RPW | Morgan Stanley Dean Witter |