| Name | City | St. | Country | Email | Scope | Network | Update | Map |
| Campus Greens @ College of DuPage | Glen Ellyn | Illinois | United States | Email | Local | | 01-09
2003 |  |
| Campus Greens, Butler University | Indianapolis | Indiana | United States | Email | Local | | 09-26
2002 | |
| Campus Journalism Project | Chicago | Illinois | United States | Email | National | Network | 09-08
2006 | |
| Campus Peace Action @ UCF | Orlando | Florida | United States | Email | Local | | 10-03
2004 | |
| Campus Progress | Washington | District Of Columbia | United States | Email | National | | 12-15
2009 | |
| Campus Progressive Alliance | Sacramento | California | United States | Email | Metro | | 03-09
2007 | |
| Canadian Committee For Peace In Chechnya | London | Ontario | Canada | Email | National | | 02-16
2006 | |
| Canadian Federation of Students | Ottawa | Ontario | Canada | | National | Network | 01-25
2004 | |
| Canadian Federation of Students - Québec | Montréal | Quebec | Canada | Email | State | Network | 07-12
2004 | |
| Canadian Student Fair Trade Network (CSFTN) | Victoria | British Columbia | Canada | Email | National | Network | 09-19
2006 | |
| Caring Pals | New York | New York | United States | | National | | 09-22
2006 | |
| Caring Pals USA | | Delaware | United States | | National | | 10-27
2006 | |
| Carleton Animal Rights Group | Ottawa | Ontario | Canada | Email | Local | | 01-14
2005 | |
| Carnegie Mellon EARTH club | Pittsburgh | Pennsylvania | United States | Email | Local | | 09-23
2002 | |
| Carolina Forest High School Young Democrats | Myrtle Beach | South Carolina | United States | Email | Local | | 09-19
2005 | |
| Carroll Community College Hill Scholars | Westminster | Maryland | United States | | Local | | 12-01
2008 | |
| Carrotmob Austria | | | | Email | National | | 07-06
2009 | |
| Casa 0101 Theater | Los Angeles | California | United States | Email | Local | | 10-08
2015 | |
| Case Democrats | Cleveland | Ohio | United States | | Local | | 09-17
2006 | |
| Catholic University of America's Habitat for Humanity | Washington | District of Columbia | United States | Email | Local | | 09-24
2002 | |
