| Abbreviation | Definition |
|---|---|
| ADFC | Australian Dairy Farmers Corporation |
| ADFI | Atlantic Dairy and Forage Institute |
| ADFK | Alexandra da Fonseca-Klein Jewellery |
| ADG | Albinar Design Group |
| ADG | Asian Dragon Group |
| ADHI | Arsenal Digital Holdings Inc |
| ADHP | Allain Duhangan Hydroelectric Project |
| ADI | Absolute Distribution Inc |
| ADI | Amalgamated Dynamics Inc |
| ADI | Analog Devices Inc |
| ADI | Analysis Design Implementation |
| ADI | Angeles Diamonds International |
| ADI | Aspen Diversified Industries |
| ADI | Atlantic Design Inc. |
| ADIA | Abu Dhabi Investment Authority |
| ADIA | Australian Dental Industry Association |
| ADIC | Advanced Digital Information Corporation |
| ADIC | Application Deployment Information Center |
| ADIFC | Abu Dhabi In-flight Catering Company |
| ADIG | American Design Intelligence Group |