| BYB | Back Yard Band (band) | 后院乐队（乐队） |
| BYB | Belarussian Ruble (currency code; now BYR) | 白俄罗斯卢布（货币代码；现为BYR） |
| BYB | Burbank YMCA Bluefins (swim team) | Burbank YMCA Bluefins（游泳队） |
| BYB | Bone Yard Boys (band) | 骨院男孩（乐队） |
| BYB | Building Your Business | 建立您的业务 |
| BYB | Back Yard Boards | 后院板 |
| BYB | Backyard Babies (band) | 后院婴儿（乐队） |
| BYB | Back Yard Breeder (unprofessional dog breeder) | 后院饲养员（非专业犬饲养员） |
| BYB | Berkshire Youth Ballet (UK) | 伯克希尔青年芭蕾舞团（英国） |
| BYB | Backyardbashers (radio controlled scale model vehicles) | 后场推土机（无线电控制比例模型车辆） |
| BYB | Back Yard Breeder | 后院饲养员 |
| BYB | Dibaa, Oman | 阿曼迪巴 |