Organizers
- Boling Little League
- Bolingbrook Golf Club
- Bolsa Chica State Beach
- Bolt Aquatics
- BombSquad Baseball
- Bonaventure Country Club
- Bond County Shrine Club
- Bondi Splash Pty Ltd
- Bondurant Soccer Club
- Boneshaker Adventures
- Bonfire Festival 5k
- Bonifay Kiwanis
- Bonita Road Runners
- Bonita Springs Recreation Center
- Bonner Basketball Camps
- Bonneville Cycling Club
- Bonnie Brook Golf Course
- Bonny Eagle Basketball League
- Book That Event LLC
- Books Offer Opportunities Kids Succeed
- BookTrails
- Boomerang Golf Links
- Boone and Crockett Club
- Boone Grove PW
- Boonton Township Education Foundation
- Boost Early Learning Center
- Bootcamp Sports Academy
- Booth Lacrosse
- Boothbay Sea and Science Center
- Bootleg Canyon Gravity Racing
- BOPARC
- Bordentown Little League
- BORN 2 RUN EVENTS LTD
- Born Survivor Adventure Ltd
- Born to Run Tralee Marathon Club
- Boru 3 Peaks
- Bosox Softball
- BOSOX Softball
- Bosque Running Shop
- BOSS multisport
- Bossier Tennis
- Boston Athletic Club
- Boston Children's Chorus
- Boston Children's Theatre, Inc.
- Boston College CSON in Haiti
- Boston Fire Fighters Local 718
- Boston Raiders
- Boston Street Running Co
- BostonSoccerAcademy
- Bot Shop Rocks