| Abbreviation | Definition |
|---|---|
| IOP | Installed Optional Package |
| IOS | Infancy Operating System |
| IOS | Intelligent Operating Software |
| IOS | Internal Operating System |
| IOS | iPhone Operating System |
| iOS | iPhone Operating Sytem |
| IOS | iPhone/iPad Operating System |
| IOS | iProducts Operating System |
| IOT | Index-Organized Table |
| IOT | InteroperabilityTest |
| IPA | InterProcedural Analysis |
| IPAK | Information Provision Assessment Kit |
| IPAM | Information Personalization Agent Manager |
| IPC | Internet Pricing and Configurator |
| IPC | Inter-Process Communication |
| IPCL | Ithaca Printer Control Language |
| IPCS | Interactive Problem Control System |
| IPDS | Intelligent Printer Data Stream |
| IPE | Individualized Plan For Employment |
| IPE | Integrated Programming Enviroment |