| Abbreviation | Definition |
|---|---|
| RWU | Rogers Water Utilities, Rogers, Arkansas |
| RWW | Robert W Warren Auction Service |
| RXM | Recycle Xchange Marketplace |
| RXY | Roxy Petroleum |
| RYA | Robert Yates & Associates |
| RYC | Rayon Yarn Corporation |
| RYC | Rivera Yacht Charter |
| RYFL | Royal Financial, Inc. of Chicago, Illinois |
| RYM | Refresh Your Memory, Inc. |
| RYM | Rich Yoder Models |
| RYP | Rangjung Yeshe Publications |
| RZG | Red Zone Global |
| RZG | Royal Z Group |
| RZI | Rood and Zwick, Inc. |
| RZI | Runzheimer International |
| RZO | Ron Z. Opher, Attorney |
| S&A | Supervision & Administration |
| S&D | Schiel & Denver Book Publishers |
| S&P | Stickney Poor |
| S&P | Stickney & Poor |