| Limeflower Holding AB | Torshälla | 0 tkr |
| Lindberg Konsult och Kompetens AB | Eskilstuna | 0 tkr |
| Lindbloms Holding AB | Torshälla | 0 tkr |
| Lind Forsberg Invest AB | Torshälla | 0 tkr |
| LindLodge AB | Falun | 0 tkr |
| Lindmark Business Consulting AB | Eskilstuna | 0 tkr |
| Lindmark Solutions AB | Torshälla | 0 tkr |
| Lindroos Projektledning AB | Eskilstuna | 0 tkr |
| Linn och Peter i Eskilstuna AB | Torshälla | 0 tkr |
| Lista Holding AB | Stora Sundby | 0 tkr |
| Livax AB | Eskilstuna | 0 tkr |
| LjÜs AB | Eskilstuna | 0 tkr |
| LM Fitness Equipment AB | Eskilstuna | 0 tkr |
| LOA Åkeri AB | Eskilstuna | 0 tkr |
| Lo AB | Eskilstuna | 0 tkr |
| Löfqvist Medical Education Development AB | Stora Sundby | 0 tkr |
| Lofsfotens Tomter AB | Kista | 0 tkr |
| LOGBAREX Aktiebolag | Torshälla | 0 tkr |
| LOKES Socionomkonsult AB | Eskilstuna | 0 tkr |
| Lolo Förvaltning AB | Eskilstuna | 0 tkr |
| Loopa Mobil AB | Marieholm | 0 tkr |
| Loopstone AB | Kvicksund | 0 tkr |
| Löta Trädgårdscentrum Aktiebolag | Ärla | 0 tkr |
| Lowalba Holding AB | Eskilstuna | 0 tkr |
| LTELMKON AB | Tierp | 0 tkr |
| LTR Vision AB | Kvicksund | 0 tkr |
| Ludwig Larsson Holding AB | Eskilstuna | 0 tkr |
| Ludwigsson IEC i Mälardalen AB | Eskilstuna | 0 tkr |
| Luftslottet AB | Eskilstuna | 0 tkr |
| Lull AB | Kvicksund | 0 tkr |
| Lumpuz Holding AB | Eskilstuna | 0 tkr |
| Lundbygruppen Holding AB | Torshälla | 0 tkr |
| Lund Holding AB | Torshälla | 0 tkr |
| Luwini AB | Eskilstuna | 0 tkr |
| Luxiupa AB | Eskilstuna | 0 tkr |
| LYFT Company AB | Eskilstuna | 0 tkr |
| Lykalia K Aktiebolag | Västra Näshulta | 0 tkr |
| Lytec Holding AB | Eskilstuna | 0 tkr |
| Mac Möller Aktiebolag | Eskilstuna | 0 tkr |
| Magda Bostad AB | Eskilstuna | 0 tkr |
| Magnus Billow Holding AB | Skogstorp | 0 tkr |
| Magnuseffekten AB | Västerås | 0 tkr |
| Magnus Pers Holding AB | Eskilstuna | 0 tkr |
| Maikelele AB | Eskilstuna | 0 tkr |
| Maja Karlsson Invest AB | Torshälla | 0 tkr |
| MAJMIK INVEST AB | Kungsör | 0 tkr |
| Makmagnus Invest AB | Torshälla | 0 tkr |
| Mälarbaden Consulting AB | Torshälla | 0 tkr |
| Mälardalen Real Estate AB | Eskilstuna | 0 tkr |
| Mälardalens Badrumsbesiktning AB | Torshälla | 0 tkr |