LL
- Book of Leinster
- L (New York City Subway service)
- LL Cool J
- LL parser
- LL postcode area
- La Liga
- Labyrinth Lord
- Landline
- Laser lithotripsy
- LearnedLeague
- Lebanese pound
- LibertyLink
- Lincoln Laboratory
- Liquid limit
- Ll
- Lumber Liquidators
- Lumbini Lions
- Miami Air International
- New Nintendo 2DS XL
- New Nintendo 3DS
- Nintendo 3DS XL
- Nintendo DSi
- Nintendo DSi XL
- The Evil of the Daleks