| Abbreviation | Definition |
|---|---|
| IODS | Intruder and Obstacle Detection System |
| IODT | Inter-Operability Developmental Testing |
| IOE | Independent Operational Evaluator |
| IOE | Initial Operating Experience |
| IOEP | Independent Operational Evaluation Plan |
| IOER | Independent Operational Evaluation Report |
| IOF | Israeli Occupation Forces |
| IOFPS | Integrated Operation Facility/Platform/System |
| IOFPS | Integrated Operation Facility/Platforms/Systems |
| IOI | Injured Other Than Hostilities or Illness |
| IOM | Installation, Operation, and Maintenance |
| IOP | Interface Operating Procedure |
| IOP | Interface Operating Procedures |
| IOPS | Interface Operating Procedures |
| IOR | Infiltrate, Observe, and Rescue |
| IOSS | Interagency Operations Security (OPSEC) Support Staff |
| IOT | I O Trap |
| IOT | Information Operations Team |
| IOT | Initial Officer Training |
| IOT&E | Initial Operational Test and Evaluation |