| Abbreviation | Definition |
|---|---|
| BCYF | Baltimore Children and Youth Fund |
| BCYF | Berkeley County Youth Fair |
| BCYF | Berrien County Youth Fair |
| BCYF | Board on Children Youth and Families |
| BCYF | Boston Center for Youth and Families |
| BCYF | Boston Centers for Youth Families |
| BDKJ | Bund der Deutschen Katholischen Jugend (German: German Catholic Youth Federation; Germany) |
| BDY | Brighton Dixie Youth |
| BEYOND | Building and Encouraging Youth Opportunities in North Dakota |
| BEYOND | Building Episcopal Youth on New Discipleship |
| BEYOND | Building Ethnic Youth Opportunities for Nursing Diversity |
| BFYS | British Forces Youth Service |
| BHA | Behavioral Heart Attack |
| BHYB | Black Hills Youth Baseball |
| BKYP | Bradford-Keighley Youth Parliament |
| BND | Boy Next Door |
| BOCY | Better Outcomes for Children and Youth |
| BODY | Builders of Dreams for Youth |
| BOTW | Bring On The World |
| BOTY | Beth Or Temple Youth |