Grapevines
- UBS 20/20 Young Leaders’ Social Impact Group
- Ubuntu 2021 Giving Circle
- Ubuntu Giving Circle
- Ubuntu Giving Circle: Group 1
- Ubuntu Giving Circle: Group 2
- Ubuntu Giving Circle: Group 3
- Ubuntu Giving Fund 2022 (A)
- Ubuntu Giving Fund 2022 (B)
- Uganda Orphans
- Ujima Grantmakers Collective
- Ujima Legacy Fund
- Ummah Giving Circle NY
- Under Over Book Club
- Union County Women for Good
- Union persuasion (one public) special fund
- United Flippin States
- Unite for Health Giving Circle
- Unity4Care
- University of Arkansas Women's Giving Circle
- University Synagogue 9th Grade Philanthropy Fund
- Upendo hope foundation
- Uphold Democracy
- Upper East Side Women for Good
- Upper West Side Women for Good
- Utah Businesses Care
- Utah Family Service Nights
- Utah Women in Business for Good
- Utah Women's Giving Circle