Publishers
- Centre d'Economie Sociale de HEC Liege - Université de Liege
- Centre d'Etude et de Recherche sur la Philanthropie (CERPhi)
- Centre d'Etudes de la Philanthropie en Suisse (CEPS)
- Centre for Charitable Giving and Philanthropy (CGAP)
- Centre for Development Innovation, Wageningen University and Research Centre
- Centre for Economic European Research - Zentrum für Europäische Wirtschaftsforschung GmbH (ZEW)
- Centre for Nonprofit Management, Trinity College
- Centre for Philanthropy Studies
- Centre for Policy Studies
- Centre for Social Impact, University of New South Wales
- Centre for Social Investment at the University of Heidelberg
- Centre Français des Fondations (CFF)
- Centre Français des Fonds et Fondations
- Centro de Filantropía e Inversiones Sociales de la Escuela de Gobierno de la Universidad Adolfo Ibáñez
- Centrum Pre Filantropiu (CPF)
- Centrum voor filantropische studies van VU Amsterdam
- Cera Foundation/BRS
- Ceres
- CF Insights
- CFLeads
- Chambre Regionale Economie Sociale Nord-Pas de Calais (CRES)
- Charities Aid Foundation (CAF)
- Charities Aid Foundation (CAF) Russia
- Charities Aid Foundation Southern Africa
- Charities Evaluation Services
- Charity Commission
- Charity Finance Group
- Charity Investors Group
- Charity Know How
- Charles F. Kettering Foundation