Organizers
- Bhutan International Marathon
- Bibleway Christian Academy
- BiCity Area Benefit Fund
- Bicycle Adventures
- Bicycle Club Of Lake County
- Bicycle Collective
- Bicycle Gallery
- Bicycle Illinois
- Bicycle NSW
- Bicycle Racing Association of Colorado
- Bicycle Tour Network
- Bicycle Touring Club of North Jersey
- Bicycle World
- Big A Ministries
- Big Bash Sports
- Big Bear Cycling Association
- Big Bear Tournaments
- Big Bend Little League
- Big Blue Adventure, LLC
- Big Boss Lacrosse
- Big Brothers Big Sisters
- Big Brothers Big Sisters c/o Tackett Chiropractic Center
- Big Brothers Big Sisters of Crawford County
- Big Brothers Big Sisters of Muscatine County
- Big Brothers Big Sisters of NWGA Mtns.
- Big Brothers Big Sisters of WNC
- Big Cat Rescue
- BIG Children's Foundation
- Big City Events, LLC
- Big Easy Sportsplex
- Big Fish Triathlon
- Big Green Lacrosse
- Big Hill Challenge
- Big Kicks Soccer
- Big Little JC Association
- Big Nasty Youth Sports
- Big Rapids Area Junior Hockey Association
- Big Rapids Little League
- Big Red Football Camp, Inc.
- Big Red Soccer Camp
- Big River Academy LLC
- Big Run Events Pty Ltd
- Big Sky Community Corporation
- Big Sky Cyclery Team
- Big Sticks Golf
- Big Sun Enterprises, LLC.
- Big Sur International Marathon
- Big Sur Marathon Foundation
- Big Sur River Run
- BIG Vision
