| Acronym | Definition |
|---|
| IDI | ICC (International Cricket Conference) Development International Conference) |
| IDI | I Doubt It |
| IDI | Initial Domain Identifier |
| IDI | Israel Democracy Institute |
| IDI | Institut de Droit International (French: Institute of International Law) |
| IDI | In-Depth Interview |
| IDI | Infectious Diseases Institute (Uganda) |
| IDI | I Deserve It |
| IDI | Industrial Developments International, Inc (commercial real estate) |
| IDI | Indianapolis Downtown, Inc |
| IDI | Indiana, Pennsylvania (Airport Code) |
| IDI | International Development Ireland (Ireland) |
| IDI | Interior Design Institute |
| IDI | Iron Disorders Institute |
| IDI | Imminent Default Indicator (Federal Home Loan Mortgage Corporation) |
| IDI | Individual In-Depth Interview |
| IDI | Imaging Doppler Interferometry |
| IDI | Infant Development Inventory (Minnesota) |
| IDI | Internet Data Integration (Cerebellum Software Inc.) |
| IDI | Infectious Disease Informatics |
| IDI | Istituto Dramma Italiano |
| IDI | Info Directions Inc. |
| IDI | Inductive Discharge Ignition |
| IDI | International Diving Institute (North Charleston, SC) |
| IDI | Interactive Design Institute (Ivrea, Italy) |
| IDI | Israeli Defence Industries |
| IDI | Improved Data Interchange |
| IDI | Ion Dipole Induced |
| IDI | Inplane Displacement and Inertia |
| IDI | Intruder Did It (JonBenet Ramsey theory) |
| IDI | Interim Desktop Image (Kaiser Permanente) |
| IDI | Imagery Data Input |
| IDI | Idea Development Interview |
| IDI | Individual Disability Income |