| Abbreviation | Definition |
|---|---|
| A4NH | Agriculture for Nutrition and Health |
| AAE | Actuarial Association of Europe |
| AAE | Affordable Accommodations for Europeans |
| AAE | AIDS Action Europe |
| ACCE | Association of Corporate Counsel Europe |
| ACDE | Accumulator and Cooler Division Europe |
| ACEN | Assembly of Captive European Nations |
| ACEU | American Center for a European Ukraine |
| ACRE | Alliance of Conservatives and Reformists in Europe |
| ACUE | American Committee for a United Europe |
| ACUE | American Committee on United Europe |
| ADDE | Alliance for Direct Democracy in Europe |
| ADDE | Association of Dental Dealers in Europe |
| ADGE | American Dance Group Europe |
| ADGE | American drama group Europe |
| ADPE | Association for Dropout Prevention in Europe |
| ADVICE | Annual to Decadal Variability In Climate in Europe |
| AE | America and Europe |
| AE | American Europe |
| AEA | Association of European Airlines |