| Abbreviation | Definition |
|---|---|
| RJP | Ritalin Junkie Productions |
| RJR | Robinson Jarvis and Rolf |
| RJT | Robert J. Tiess Music |
| RJU | Rijksdienst Jaarlijkse Vakantie |
| RJW | R. J. Walsh Associates, Inc. |
| RJW | R. John Wright collectable teddy bears |
| RJW | Rewinds & J. Windsor |
| RJW | Russell, Jones, & Walker |
| RJY | Ronald J. York, CPA |
| RJZ | Rex J. Zgarba, Attorney |
| RKA | Ralph Kimball Associates |
| RKA | Roger Kaufman and Associates |
| RKA | Roslyn, Kunin, and Associates, Inc. |
| RKB | Responsive KnowledgeBase |
| RKC | Rumberger, Kirk, & Caldwell |
| RKEPB | Raymond Kaiser Engineering/ Parsons Brinkerhoff - Quade/ Douglas Inc. |
| RKF | Ramsey, Krug, Farrell, & Lensing |
| RKF | Robert K. Futterman & Associates, L. L. C. |
| RKF&L | Ramsey, Krug, Farrell, & Lensing |
| RKFL | RocketFuel Blockchain, Inc. |