| Acronym | Definition |
|---|
| BYF➣Boyne Falls (Amtrak station code; Boyne Falls, MI) |
| BYF➣Before You Follow |
| BYF➣Burn Your Fuel (blog) |
| BYF➣Build Your Future (various locations) |
| BYF➣Boyfriend |
| BYF➣Be Young Forever |
| BYF➣Boston Youth Fund (Boston, MA) |
| BYF➣Baptist Youth Fellowship |
| BYF➣Backyard Football |
| BYF➣Bring Your Friends |
| BYF➣Bangladeshi Youth Forum (UK) |
| BYF➣Bring Your Font (chat rooms) |