| Abbreviation | Definition |
|---|---|
| ANet | The Achievement Network |
| ANF | American - Nicaraguan Foundation |
| ANF | American Nurses Foundation |
| ANGED | Arab Network for GEnder and Development |
| ANJEC | Association of New Jersey Environmental Commissions |
| ANKO | Algemene Nederlandse Kappers Organisatie |
| ANLAF | Astraea National Lesbian Action Foundation |
| ANLAFI | Astraea National Lesbian Action Foundation, Inc. |
| ANM | Advancing Native Missions |
| ANPCC | Alberta Not-for-Profit Case Competition |
| ANRC | American National Red Cross |
| ANRF | American Non-smokers' Rights Foundation |
| ANRF | Arthritis National Research Foundation |
| ANSF | AMVETS National Service Foundation |
| ANSR | Americans for Non- Smokers' Rights |
| ANSRF | American Non-Smokers' Rights Foundation |
| ANSWER | Action Network for Social Work, Education, and Research |
| ANSWERS | American Nagarathar Sangam Win Educational Reward Scholarships |
| ANSWERS | American Nagarathar Sangam – Win Educational Reward Scholarships |
| ANTS | Anti-Nicotine and Tobacco Service |