| Abbreviation | Definition |
|---|---|
| ADD | Adaptable, Determined, Dedicated |
| ADD | Anti Discipline Disorder |
| ADD | Arithmetic Developed Daily |
| ADD | Arithmetic Done Daily |
| ADD | Attention Deficit Disorder |
| ADDL | Access Digital and Distributed Learning |
| ADE | Apple Distinguished Educator |
| ADE | Apple Distinguished Educators |
| ADE | Arizona Department of Education |
| ADE | Arkansas Department of Education |
| ADE | Automated Distance Education |
| ADEC | Alliance for Distance Education in California |
| ADEC | American Distance Education Consortium |
| ADEF | African Deans of Education Forum |
| ADEI | Advanced Dental Education Institute |
| ADEI | Automobile Dealer Education Institute |
| ADEO | Additional District Education Officer |
| ADEP | Adolescent Diversion Education Program |
| ADEP | Alcohol and Drug Education Program |
| ADEP | Alcohol and Drug Education Programs |