| Abbreviation | Definition |
|---|---|
| ROAC | Rock Of Ages Corp |
| ROADI | Reach Out And Read, Inc. |
| ROBF | Robeco Afrika Fonds NV |
| ROCG | RAN ONE Consulting Group |
| ROE | Return On Equity |
| ROEM | Return on Expectation Measurement |
| ROF | Ring Of Fire Enterprises |
| ROGI | Radiant Oil Gas Inc |
| ROH | Rubery Owen Holdings |
| ROI | Radio One, Inc. |
| ROI | Return On Investment |
| ROIA | Rajasthan Oil Industries Association |
| ROII | RAM Optical Instrumentation, Inc. |
| ROII | Rock Oil International Incorporated |
| ROIR | Reach Out International Records |
| ROL | Reader Offers Ltd |
| ROL | Reader Offers, LTD. |
| RON | Radiofoniczny Oorodek Nadawczy |
| RONW | Return On Net Worth |
| ROPES | Reality Oriented Physical Experiential Services |