Organizers
- The Boaz Project
- The Bolles School
- The BOMC
- The Book Bridge
- The Boston Conservatory
- The Boys & Girls Club of Springfield-SERTOMA UNIT
- The Brain Aneurysm Foundation
- The Brandon Bay half marathon & 10k
- The Breast Cancer Research Foundation
- The Brianna Marie Foundation Inc.
- The Brick House
- The Bridge Adaptive Sports and Recreation
- The Bridge Golf Learning Center
- The Broadway Clubhouse LLC
- The Broadway Star Project
- The Bromfield School, Class of 2012
- The Bub Run
- The Bulli Burn
- The Calverton School
- The Cambridge School of Culinary Arts
- The Cameron Fitzwater Memorial Scholarship
- The Cameron Fitzwater Memorial Scholarship Foundation
- The Cancer Challenge
- the carers association
- The Center
- The Center for Gifted
- The Center for Kosher Culinary Arts
- The Center for Performing Arts at Rhinebeck
- The Center for Women
- The Center of Anna Maria Island
- The Center School
- The Challenger Learning Center of Kentucky
- The Chapel School
- The Charity Run, LLC
- The Chiari Group
- The Chicago Academy of Music
- The Chicago Ballet
- The Chicago Weaving School
- The Children of the Earth Foundation
- The Children' Theatre of Cincinnati
- The Children's Aid Foundation of York Region
- The Children's Theatre of Cincinnati
- The Children's Tree Montessori School
- The Chip Hale Center
- The Christian Church of Mid-America (Disciples of Christ)
- The Church at War Hill
- The Circle School
- The Citizen Science Lab
- The City of Annapolis
- The City of Charleston Municipal Golf Course
