- 100 Black Men of Atlanta
- 1736 Family Crisis Center
- 42STRONG - Tate (42Strong)
- 482Forward
- 4C Child Care Unlimited
- A Better World Fund
(P.O. Box 237172 New York, NY) - A Bone Marrow Wish
- A Brighter Way
- A Brighter Way
- A Child's Place
- A Safe Place
- AAA Crisis Pregnancy Center
- AbilityFirst (formerly Crippled Children's Society of So. California)
- About Face: Veterans Against the War
- ABVM Education Endowment Fund
- Acacia Adult Day Services
- Academy of Hope Adult Public Charter School
- Academy of the Sacred Heart
- Academy of the Sacred Heart- Micheline Wentworth Global Scholars Program
- Access Center of San Diego County
- Access Fund
(P.O. Box 17010 Boulder, CO) - Access to Justice Fund
- Access-York Inc.
- ACCION International
- Accounting Aid Society
(3031 W Grand Blvd Detroit, MI) - Achievement and Rehabilitation Centers, Inc
- Achievement Centers for Children
- ACORN Housing Corporation
(117 West Harrison, 2nd Floor Chicago, IL) - Acoustic Neuroma Association
(3109 Maple Drive #406 Atlanta, GA) - Action Against Hunger - USA
(875 Avenue of the Americas #1905 New York, NY) - Action for Children
- Activities for Retarded Children
- Ada Christian School Education Foundation
- Ada Regional United Way, Inc.
- Ada S. McKinley Community Services
- Addison Township Public Library
- Adrian Dominican Generalate
- Adult Care Center of Central Virginia
- Adult Care Center Of NSV
- Adult Day Services of Orange County
- Adult Guardianship
- Advanced Employment, Inc.
- Advent House Ministries Inc
- Adventist Frontier Mission
- Advocacy Institute
(1707 L Street, NW #400 Washington, DC) - Advocacy Services for Kids
- Affirmations Lesbian & Gay Community Center
- Africa Action
(110 Maryland Ave., NE #509 Washington, DC) - Africa Fund
(50 Broad Street #711 New York, NY) - African American Parent/Community Coalition for Education Equality
- After-school All-stars / Los Angeles
- Agape Child and Family Services Inc
- Agape Counseling Center, Inc.
- Agape House, Inc.
- Aging and Disabilities Charities of America
(10 Chesnut Street Salem, MA) - Agrace HospiceCare, Inc.
- Aid for Africa Federation, Inc.
(6909 Ridgewood Ave Chevy Chase, MD) - Aid In Milan, Inc
- Aid in Milan, Inc.
- Aid to Victims of Domestic Abuse Inc. (ADVA)
- AIDS Arms, Inc.
- AIDS Global Action Inc. & Member Organizations
(5185 Mac Arthur Blvd., NW Washington, DC) - AIDS Outreach Center
- AIDS Partnership Michigan
- AIDS Project Los Angeles
- AIDS Research Foundation (amfAR)
- AIDS Services Foundation Orange County
- AIDS Services of Austin
- AIDS Services of North Texas
- AIDS Services of North Texas (Collin County)
- AIDS, Medicine & Miracles
(P.O. Box 20650 Boulder, CO) - Ainsworth Foundation
- Akshaya Patra Foundation USA
- Albemarle United Way, Inc.
- Albion-Homer United Way
- Alexandra House, Inc
- Alexandria House
- Alive Hospice of Nashville
- Alkebu-lan Village
- All Four One
- All India Movement (AIM) for SEVA, Inc.
- All Join Hands Foundation
- All Peoples Christian Center
- All Well-Being Services
- Allegan County United Way - MI
- Allegany County United Way, Inc.
- Allen Community Outreach
- Alliance Area United Way, Inc.
- Alliance Defense Fund
- Alliance for Children & Families
- Alliance for Community Care
- Alliance for Community Trees
(4603 Calvert Rd College Park, MD) - Alliance for Epilepsy Research
- Alliance for Multicultural Community Services
- Alliance For The Mentally Ill Council of Southeast Michigan
- Alliance to Save Energy
(1200 18th Street, NW #900 Washington, DC) - Allied Media Projects, INC
- Alma College
- Almost Home
- Aloha United Way