BLF
BLF is the abbreviation for:
- Special performance assessment, an examination at secondary schools in Thuringia, Hesse and Saxony
- Bergland fire engine, an off-road fire truck fire brigades of Austrian
- Mountains fire truck, old name for a Rüstlöschfahrzeug
- Busy Lamp Field to see a feature on phones around the busy status of other participants
- Disambiguation
- Abbreviation