Publishers
- Black Male Institute
- Black Youth Project
- Black Youth Project 100 (BYP100)
- Blandin Foundation
- Ble Solutions
- Bloomberg Philanthropies
- Blue Cross and Blue Shield of Minnesota Foundation
- Blue Cross Blue Shield Association
- Blue Cross Blue Shield of Massachusetts Foundation
- Blue Ventures
- Blueprint Research & Design Inc.
- BoardSource
- Bob Harlow Research and Consulting
- Boston College
- Boston College Center for Corporate Citizenship
- Boston College Center for Work and Family
- Boston College Center on Wealth and Philanthropy
- Boston Green Ribbon Commission
- Boston Police Department
- Boston Public Schools
- Boston Women's Fund
- Bouchet and Associates Strategic Consulting
- Brady Campaign to Prevent Gun Violence
- Brady Center To Prevent Gun Violence
- Brady United Against Gun Violence
- Brand Positoning Doctors
- Brandworkers
- Brazilian Philanthropy Network for Social Justice (Rede de Filantropia Para a Justica Social)
- Brennan Center for Justice at New York University School of Law
- Bridges Ventures
