Catholic Health Association of the United States (CHA)

Catholic Legal Immigration Network, Inc. (CLINIC)

Catholic Worker Movement (CWM)

Catholics For Choice (CFC)

Catholics For Obama (CFO)

Catholics in Alliance for the Common Good (CACG)

Catholics United (CU)

Caucus of Working Educators (WE)

Center for American Progress (CAP)

Center for Campus Free Speech (CCFS)

Center for Climate Strategies (CCS)

Center for Community Change (CCC)

Center for Constitutional Rights (CCR)

Center for Countering Digital Hate (CCDH)

Center for Economic and Policy Research (CEPR)

Center for Economic and Social Rights (CESR)

Center for Independent Media (CIM)

Center for International Policy (CIP)

Center for Media and Democracy (CMD)

Center for New Community (CNC)

Center for Policy Analysis on Palestine (CPAP)

Center for Popular Democracy (CPD)

Center for Progressive Leadership (CPL)

Center for Public Justice (CPJ)

Center for Reproductive Rights (CRR)