| Abbreviation | Definition |
|---|---|
| IS | Integrated Systems |
| IS | Interface Specification |
| ISA | Industry Standard Architecture |
| ISA | Instrumentation Society of America |
| ISAR | Inverse Synthetic Aperture Radar |
| ISB | Independent Side-Band |
| ISB | Integrated Squared Bias |
| ISBD | Inter-Sub-Band Detector |
| ISBL | InSide the Battery Limit |
| ISBR | ImageStation Base Rectifier |
| ISC | Industry Steering Council |
| ISC | Inter System Crossing |
| ISCET | International Society of Certified Electronics Technicians |
| ISD | In-Station Diagnostics |
| ISD | Interface State Density |
| ISD | Internal Storage Device |
| ISD | Intrinsically Static-Dissipative |
| ISDE | Institute for Space and Defense Electronics |
| ISDN | Integrated Services Digital Network |
| ISE | Integrated Solid Effect |