| Acronym | Definition |
|---|
| IDCA | International Data Center Authority (standardization) |
| IDCA | I Don't Care Anymore |
| IDCA | I Don't Care About |
| IDCA | Industrial Design Council of Australia (est. 1958) |
| IDCA | International Digestive Cancer Alliance |
| IDCA | International Design Conference in Aspen (Aspen, CO) |
| IDCA | Infiltrating Ductal Carcinoma (breast cancer) |
| IDCA | Indian Diamond Colorstone Association (jewelry industry) |
| IDCA | Integrated Detector/Cooler Assembly (Apache helicopter system) |
| IDCA | Islamic Dawah Centre of Australia |
| IDCA | International Development Corporation Agency |
| IDCA | Intermountain Data Center Association |
| IDCA | Indecent Displays Control Act (UK) |
| IDCA | Inchberry & District Community Association (UK) |