| ODAR | Optimum Detector-Array Receiver | 最佳探测器阵列接收器 |
| ODAR | Organization Designated Airworthiness Representatives | 组织指定适航代表 |
| ODAR | Office of Disability Adjudication and Review (Social Security Administration) | 残疾裁决和审查办公室（社会保障管理局） |
| ODAR | Office of Development and Alumni Relations | 发展与校友关系办公室 |