| Acronym | Definition |
|---|
| BYC | Boyne City (Amtrak station code; Boyne City, MI) |
| BYC | By Your Command (gaming) |
| BYC | Bitch You Crazy |
| BYC | British Youth Council |
| BYC | Bellingham Yacht Club (Bellingham, WA) |
| BYC | Boston Yacht Club (Marblehead, MA) |
| BYC | Britannia Yacht Club (Ottawa) |
| BYC | Betws-y-Coed (Snowdonia North Wales village) |
| BYC | Base Year Compensation (NBA) |
| BYC | Bremerton Yacht Club (Bremerton, WA) |
| BYC | Backyard Cricket |
| BYC | Biwako Yacht Club (Biwako, Japan) |
| BYC | Berkshire Youth Choir |
| BYC | Boston Young Contemporaries (exhibition) |
| BYC | Bournemouth Youth Council |
| BYC | Bishop's Youth Council |
| BYC | Bishopric Youth Committee (church) |
| BYC | Big Yankin' Crankers |
| BYC | Blennerhassett Yacht Club (Belpre, OH) |
| BYC | Braintree Youth Council (Essex, UK) |
| BYC | Business Yachtclub (Barcelona, Spain) |
| BYC | Back Yard Customs |