- The Robert Wood Johnson Endowment
- The Unger Family Foundation
- The Walker Foundation
- The Wallace Foundation
- Tides
- Tiffany & Co. Foundation
- Tshikululu Social Investments
- United States Agency for International Development (USAID)
- UPS Foundation
- USAID
- W.K. Kellogg Foundation
- Wallace H. Coulter Foundation
- Wilburforce Foundation
- William and Flora Hewlett Foundation
- William T. Grant Foundation
- Windgate Charitable Foundation
- Wyncote Foundation
- Xinhu Venture Philanthropy Fund
- Youth Philanthropy Connect (YPC)
