| ROI | Royal Institute of Oil Painters | (英国)皇家油画家协会 |
| ROI | the Republic of Ireland | 爱尔兰共和国 |
| ROI | Relevance Originality Impact | ROI理论 |
| ROI | Rovaniemi, Finland - Rovaniemi (Airport Code) | 芬兰罗瓦涅米-罗瓦涅姆(机场代码) |
| ROI | RAM Optical Instrumentation | RAM光学仪器 |
| ROI | Region of Interest | 感兴趣的地区 |
| ROI | Reactive Oxygen Intermediate | 活性氧中间体 |
| ROI | Republic Of Ireland | 爱尔兰共和国 |
| ROI | Radius Of Influence | 影响半径 |
| ROI | Return On Investment | 投资回报率 |
| ROI | Record of Invention | 发明记录 |
| ROI | Release of Information (hospitals/patients) | 发布的信息(医院/患者) |
| ROI | Remote Operator Interface | 远程操作员界面 |
| ROI | Route of Ingress | 进入路线 |
| ROI | Return of Investment | 投资回报 |
| ROI | Radiological Operating Instructions | 辐射操作说明 |
| ROI | Rate of Interest | 利率 |
| ROI | Rock of Israel | 以色列之石 |
| ROI | Report On Investigation | 调查报告 |
| ROI | Report Of Investigation | 调查报告 |
| ROI | Radical Online Initiative | 激进在线计划 |
| ROI | Rural Opportunities, Inc. | 农村机会公司。 |
| ROI | Risk Of Investment | 投资风险 |
| ROI | Return On Information | 信息回报率 |
| ROI | Really Outrageous Interpretation | 真的太离谱了 |
| ROI | Rovaniemi Airport, Rovaniemi, Finland | 罗瓦涅米机场,罗瓦涅米市,芬兰 |
| ROI | Return On Internet | 返回Internet |
| ROI | Return On Innovation | 创新回报 |
| ROI | Right On It | 就在上面 |
| ROI | Residue of Ignition | 点火残留物 |
| ROI | Risk of Incarceration | 监禁的风险 |
| ROI | Read Only Information | 只读信息 |
| ROI | Range Operating Instruction | 量程操作说明 |
| ROI | RDMA (Remote Direct Memory Access) Over Internet | Internet上的RDMA(远程直接内存访问) |
| ROI | Realm of Insanity (gaming clan) | 疯狂王国(游戏部落) |
| ROI | Release Of Information | 信息的发布 |
| ROI | Rhythm Optimized Integration | 节奏优化集成 |
| ROI | Republic Of India | 印度共和国 |
| ROI | Replacement of Obsolete Items | 替换过时项目 |
| ROI | Rate Of Increase | 增长率 |
| ROI | Return on Integrity (finance) | 诚信回报(财务) |
| ROI | Regions Of Interest | 感兴趣的地区 |
| ROI | Registration of Interest | 权益登记 |
| ROI | Run On Ice | 在冰上跑步 |
| ROI | Rate Of Income | 收入比率 |
| ROI | Record Of Initiative | 主动性记录 |
| ROI | Results Oriented Instructors | 注重结果的讲师 |
| ROI | Results, Opportunities, and Impacts | 结果、机会和影响 |
| ROI | Radio One, Inc. | Radio One公司。 |