| IADC | Indiana Alzheimer Disease Center 
| Others |
| IADC | Induced After Death
| Others |
| IADC | Induced After Death Communication
| Others |
| IADC | Inter American Defense College
| Others |
| IADC | Inter-American Defense College
| Others |
| IADC | Inter-American Democratic Charter
| Others |
| IADC | International Advanced Database Conference
| Others |
| IADC | International Airport Development Company
| Others |
| IADC | International Association of Defense Counsel
| Others |
| IADC | International Association of Dredging Companies
| Others |
| IADC | International Association of Drilling Contractors
| Others |
| IADC | International Automobile Driver's Center
| Others |
| IADC | International Automobile Driver's Club
| Others |
| IADC | International Automotive Documentation Centre
| Others |