| Lignin Industries AB | |
| Limavi AB | |
| Lime Technologies Sweden AB | |
| Limina AB | |
| Linderoths | |
| Lindhe Xtend AB | |
| Lindholmen Science Park | Västra Götaland |
| Linga Energy | |
| Lingio AB | |
| Linkafy AB | |
| Linköping Science Park AB | Östergötland |
| Linköping Universitet | Östergötland |
| Linköping University - Department of Computer and Information Science | Östergötland |
| Linköpings universitet - Computer Vision Laboratory | |
| Linköpings universitet - Matematiska institutionen | Östergötland |
| Linnaeus Centre for Bioinformatics | Uppsala |
| Linnéuniversitetet | Kronoberg |
| Linnéuniversitetet -Fakulteten för teknik | Kronoberg |
| Lioness Medtech AB | |
| Lipidor AB | |
| Lipigon Pharmaceuticals AB | |
| Lipum AB | |
| Liquid Wind | |
| Litium AB | Stockholm |
| LiU Entrepreneurship and Development | |
| Lizoft.se | Gotland |
| LM Data | Stockholm |
| Load Impact AB | Stockholm |
| Localize Direct AB | |
| Logcast | |
| Logica Norr AB | Norrbotten |
| Logosoft AB | Jönköping |
| Logwise | |
| Lohide Advisory AB | |
| Loke AB | Västmanland |
| Lokon Pharma | |
| Loomis-Pay | |
| Loopia | Västmanland |
| Loopia AB | |
| LootLocker AB | |
| Loppla | |
| Lovorda | |
| LSG Communication AB | Västernorrland |
| Luau Games | |
| Lucero AB | |
| Luleå tekniska universitet | Norrbotten |
| LumenRadio | |
| LumeoTech AB | |
| Luminar Ventures AB | |
| Lumito AB (publ) | |