| Name | City | St. | Country | Email | Scope | Network | Update | Map |
| APS | Washington | District of Columbia | United States | Email | Local | | 08-19
2005 |  |
| Architects of a Neo-Democracy | San Marcos | Texas | United States | Email | Local | | 09-10
2006 | |
| Arise | Abuja | Abuja Federal Capital Territory | Nigeria | Email | National | | 01-31
2012 | |
| ARISTEIA | Northfield | Massachusetts | United States | Email | Local | | 10-12
2003 | |
| Arizona Activist Coalition | Chandler | Arizona | United States | Email | State | | 10-08
2008 | |
| Arkansas NOW | Little Rock | Arkansas | United States | Email | State | | 10-24
2005 | |
| Arms Against War | | England | United Kingdom | Email | International | | 02-10
2007 | |
| Art and Activism | Boston | New York | United States | | Local | | 07-23
2008 | |
| Artist Boat | Galveston | Texas | United States | Email | Local | | 04-10
2009 | |
| Artists and Advocates for Awareness and Action | Burlington | Vermont | United States | | Local | | 09-23
2014 | |
| Artists Rights Movement | Oakland Park | Florida | United States | Email | National | | 07-18
2012 | |
| Artstorm | Providence | Rhode Island | United States | Email | Local | | 05-13
2004 | |
| Asheville Anarchist People of Color Chapter | Asheville | North Carolina | United States | Email | Local | | 01-05
2005 | |
| Asian American Sisters in Action - Mount Holyoke College | | Massachusetts | United States | | Local | | 06-11
2006 | |
| Asian Pacific Student Association at Loyola Marymount University | Los Angeles | California | United States | Email | Local | | 04-13
2006 | |
| Associated Students for Women's Issues | Flagstaff | Arizona | United States | Email | Local | | 11-13
2016 | |
| Association Défi de Marrakech des affaires humanitaires socioculturelles et spo | Marrakech | | Morocco | Email | Regional | | 07-28
2010 | |
| Association for the Advancement of Sustainability in Higher Education | Portland | Oregon | United States | Email | International | Network | 12-14
2006 | |
| Association HIBA pour le Développement et le service volontaire | Tetouan | Morocco | Morocco | Email | Regional | Network | 03-07
2012 | |
| ASU Amnesty International | Tempe | Arizona | United States | Email | Local | | 08-16
2002 | |
