| Abbreviation | Definition |
|---|---|
| ADFL | Association of Departments of Foreign Languages |
| ADFM | Association Democratique des Femmes du Maroc |
| ADI | Academic Development Institute |
| ADI | American Defense Institute |
| ADI | Animal Defenders International |
| ADI | Assistance Dog Institute |
| ADIAF | Assistance Dogs International Accredited Facility |
| ADIF | Association for the Defense of the International Humanitarian Fundamental Laws |
| ADIJ | Association pour le Developpement de l'Information Juridique |
| ADIM | Institute of Art, Design, & Interactive Media |
| ADIRE | Alternative Development Initiative for Rural Engagement |
| ADIS | Asociatia pentru Dezvoltare si Incluziune Sociala |
| ADL | American Defense League |
| ADL | Animal Defense League |
| ADMA | Australian Disease Management Association |
| ADMC | Alzheimers Disease Management Council |
| ADME | Association of Destination Management Executives |
| ADMT | Association for Dance Movement Therapy |
| ADOC | Adoptie Driehoek Onderzoeks Centrum |
| ADR | Annual District Report |