| OMAR | Overhead Manipulator | 头顶操纵器 |
| OMAR | Ozone Monitoring And Research | 臭氧监测和研究 |
| OMAR | Office of Medical Applications of Research | 医学应用研究办公室 |
| OMAR | Operational Maintenance and Repair (US Navy ship) | 作战维护和维修（美国海军舰艇） |
| OMAR | Operations & Maintenance, Army Reserve | 操作、保养、军储备 |
| OMAR | Order Management And Routing (DoubleHelix Software) | 订单管理和路由（DoubleHelix软件） |
| OMAR | Operation and Maintenance, Army Reserve | 陆军预备役作战与维护 |