LLF could refer to:
- Limited Locking Facility
- Line Loss Factor
- Llanfairfechan railway station, Wales; National Rail station code LLF.
- Lobster Liberation Front
- Low-level formatting of computer hard disks.
- Low Level Flight, a Canadian alternative rock band
- LoveLikeFire, a San Francisco indie rock band
- Lake Lavon Fishing, a North Texas Fishing Forum
- Lucha Libre Femenil
- Legendary Legend Fairy, an alternative pop band