Organizers
- Biola Soccer Camps
- Birchman Baptist Church
- Birchwood Lakes Colony Club
- Birchwood Tennis & Fitness Club
- Birck Boilermaker Golf Complex
- Bird Conservancy of the Rockies
- Bird River Studios
- Birkdale Golf Club
- Birmingham AIDS Outreach
- Birmingham Botanical Gardens
- Birmingham Dogs Home
- Birthday Marathon
- BIS Phuket Flying Fish
- Bisham Abbey Sailing & Navigation School
- Bishop Arts Theatre Center
- Bishop Blanchet High School
- Bishop Chatard High School
- Bishop Foley Catholic High School
- Bishop Lynch Summer Camps
- Bishop McNamara Summer Camps
- Bishop O'Dowd High School
- Bishops Events
- Bishop's Events, LLC
- Bismarck High School Football Boosters
- Bismarck Marathon
- Bismarck Parkinson's Support Group
- Bismarck Parks and Recreation
- Bismarck Parks and Recreation District
- Bison Events West
- Bison Lacrosse
- Bison Ranger Challenge
- Bison Soccer Camps
- Bison Sporting Events
- Bison Sporting Events, LLC
- Bison Tournaments
- BISOU EVENTS LLC – Duathlon
- Bite the Bullet Sports
- Bixby School
- BJ Productions
- BKR Softball Camps
- Black Bear LAX LLC
- Black Bear Marathon & Half Marathon
- Black Bear Wines & Spirits
- Black Belt America
- Black Belts for Christ Ministries, Inc.
- Black Cat/SPCA 5K Race Committee (Bucks County SPCA)
- Black Creek 5K
- Black Diamond Lacrosse
- Black Dog Swimming
- Black Elk Hockey Camp
