| Acronym | Definition |
|---|
| IDAC | Institute of Development, Aging and Cancer (Japan) |
| IDAC | Informix Data Access Components |
| IDAC | Infectious Disease Association of California |
| IDAC | Infobus Data Access Component (Lotus) |
| IDAC | Instantaneous Detection and Correction (railroad wheel slippage) |
| IDAC | Internet Directory of Advisors and Consultants |
| IDAC | Interim Deployable ACCS Component |
| IDAC | Integrated Design & Analysis Consultants, LTD (Surrey, UK) |
| IDAC | Interim Digital-Analog Converter |
| IDAC | Impeller Driven Aircraft |
| IDAC | Interconnecting Digital-Analog Converter |
| IDAC | Inter-Digital Analog Converter |
| IDAC | Integrated Detector Amplifier Combination |
| IDAC | Istituzioni di Alta Cultura (Italian: Institutions of High Culture) |
| IDAC | Industrial Data Acquisition and Control (Slave Lake, Alberta, Canada technology company) |