| Abbreviation | Definition |
|---|---|
| AN | Associate of Nursing |
| ANA | American Neurological Association |
| ANA | American Numismatic Association |
| ANA | American Nurses Association |
| ANA | Association of National Advertisers |
| ANAB | American National Accreditation Board |
| ANBCC | Asociatia Nationala a Birourilor de Consiliere a Cetatenilor |
| AND | Academy of Nutrition and Dietetics |
| ANFC | Australian Nurses for Continence |
| ANFD | Association Nationale Des Familles Des Disparus |
| ANNA | American Nephrology Nurses Association |
| ANPA | Association Of National Park Authorities |
| ANPA | Australian Neuralign Practitioners Association |
| ANPQP | Alliance New Product Quality Procedure |
| ANREP | Association of Natural Resource Extension Professionals |
| ANS | American Nuclear Society |
| ANSA | Artists for a New South Africa |
| ANSM | Association of Nova Scotia Midwives |
| ANTE | Association of Neo-Tech Entrepreneurs |
| ANTOR | Association of National Tourist Office Representatives |