| BYC | Back Yard Cricket 
| Others |
| BYC | Baker Youth Club
| Others |
| BYC | Balboa Yacht Club
| Others |
| BYC | Bali Yaris Club
| Others |
| BYC | Bali Yaris Community
| Others |
| BYC | Baltimore Youth Cycling
| Others |
| BYC | Baptist Youth Camp
| Others |
| BYC | Barbados Yacht Club
| Others |
| BYC | Barbara Ying Center
| Others |
| BYC | Barrie Yacht Club
| Others |
| BYC | Barrington Yacht Club
| Others |
| BYC | Bayview Yacht Club
| Others |
| BYC | Believers' Chapel Youth
| Others |
| BYC | Beller-Chang-Yacobi (protocol)
| Others |
| BYC | Belleville Yacht Club
| Others |
| BYC | Bellingham Yacht Club
| Others |
| BYC | Benicia Yacht Club
| Others |
| BYC | Berkeley Yacht Club
| Others |
| BYC | Berks Youth Chorus
| Others |
| BYC | Beschen Youth Compound
| Others |
| BYC | Best You Can
| Others |
| BYC | Beverly Yacht Club
| Others |
| BYC | Big Yellow Car
| Others |
| BYC | Big Yellow Cup
| Others |
| BYC | Bishop Youth Council
| Others |
| BYC | Bishopric Youth Committee
| Others |
| BYC | Boston Yacht Club
| Others |
| BYC | Bradenton Yacht Club
| Others |
| BYC | Brandywine Youth Club
| Others |
| BYC | Breakfast Yoga Club
| Others |
| BYC | Breakwater Yacht Club
| Others |
| BYC | Bremerton Yacht Club
| Others |
| BYC | Brigham Young College
| Others |
| BYC | British Yacht Club
| Others |
| BYC | British Youth Council
| Others |
| BYC | Broadway Youth Center
| Others |
| BYC | Brooklyn Yoga Collective
| Others |
| BYC | Brooklyn Youth Chorus
| Others |
| BYC | Broward Youth Coalition
| Others |
| BYC | Build Your Car
| Others |
| BYC | Burnsville Youth Collaborative
| Others |
| BYC | Yacuiba, Bolivia
| Others |