Publishers
- Advancing New Standards in Reproductive Health (ANSIRH)
- Advocates for Children of New Jersey
- Advocates for Children of New York
- Advocates for Environmental Human Rights
- Advocates for Youth
- Aeon
- Africa Grantmakers' Affinity Group
- Africa Growth Initiative at Brookings
- African American Collaborative Obesity Research Network at University of Pennsylvania School of Medicine
- African American Male Achievement
- African American Policy Forum
- African Centre for Cities
- African Development Bank
- African Palliative Care Association
- African Studies Review
- Afterschool Alliance
- Agali
- Agency for Healthcare Research and Quality
- Ahmanson Foundation
- AIDS United
- AIFS Foundation
- Alabama Appleseed Center for Law and Justice
- Alabama Asset Building Coalition
- Alameda County Public Health Department
- Albany Community Action Partnership
- Albion Community Foundation
- Alfred P. Sloan Foundation
- Alice Paul Institute
- ALIGN: The Alliance For a Greater New York
- All-ages Movement Project, a project of Tides Center