| Abbreviation | Definition |
|---|---|
| int | integer |
| INT | INTerrupt |
| INTERNET | Internetworking |
| IO | Initial Object |
| IO | Input/Output |
| IOC | ISDN Ordering Code |
| IOCP | Input/ Output Configuration Program |
| IOCS | Input/Output Control Subsystem |
| IOCS | Input/Output Control System |
| IOD | Interactive Object Definition |
| IOEDC | Input Output Error Detection Code |
| IOGEN | Input/Output device GENeration |
| IoPL | Independence of Presentation Logic |
| IOPL | Input/Output Privilege Level |
| IOQ | Input Output Quotient |
| IOS | Input Output System |
| IOS | Input/Output Supervisor |
| IOU | International Octel Users |
| IPA | Instructions Per Second |
| iPAAS | Integration Platform As A Service |