- Pettus-Crowe Foundation
- Rasmuson Foundation
- Robert Wood Johnson Foundation
- Rockefeller Brothers Fund
- Rockefeller Foundation
- S. D. Bechtel, Jr. Foundation
- St Mary
- Surdna Foundation
- Swedish International Development Cooperation Agency (SIDA)
- The Ralph M. Parsons Foundation
- The Wallace Foundation
- Trust for London
- UniHealth Foundation
- United Kingdom Department for International Development
- Virginia G. Piper Charitable Trust