- Lainappi
- LATO Leadership Automation Tools
- Leadoo
- LeaDroid
- LeakLook
- LeaseGreen Group
- LED TAILOR INNOVA7ION
- Leisco
- Levotation
- Lifeclass
- Lifetimely
- Light Cognitive
- Lightheart Entertainment
- Lightneer
- Liid
- Lillagunga
- Linear
- Lingon Games
- Linkker
- LiveRing
- Liveto Group
- Lizard Hazard Games
- Lobster.ist
- Locationews
- Lockpickle
- Logitrail
- Logmore
- Loiste Interactive
- Loïva
- LokiTime
- Londi
- Long Play
- Lost Hoodie
- LoupeDeck
- Lovia
- LS CancerDiag
- Lucify
- Lukoton
- Lumine Lighting Solutions
- Lumoa
- Lunchie
- Luonkos Finland Oy Ltd
- LVS Brokers
- Lyfta
- LYGG