| Lockbox Verksamhet Mälardalen AB | Stockholm | 0 tkr |
| Locker Holding AB | Nyköping | 0 tkr |
| LOCO1 AB | Nyköping | 0 tkr |
| Löfqvist Medical Education Development AB | Stora Sundby | 0 tkr |
| Lofsfotens Tomter AB | Kista | 0 tkr |
| LOGBAREX Aktiebolag | Torshälla | 0 tkr |
| Logilu AB | Vingåker | 0 tkr |
| LOKES Socionomkonsult AB | Eskilstuna | 0 tkr |
| Lolo Förvaltning AB | Eskilstuna | 0 tkr |
| Lönn & Hawo AB | Stockholm | 0 tkr |
| Lönnmo Holding AB | Oxelösund | 0 tkr |
| Lonntorp Invest AB | Stigtomta | 0 tkr |
| Loopa Mobil AB | Marieholm | 0 tkr |
| Loopstone AB | Kvicksund | 0 tkr |
| Löta Trädgårdscentrum Aktiebolag | Ärla | 0 tkr |
| Lottas AB | Nyköping | 0 tkr |
| Lotterberg Holding AB | Vingåker | 0 tkr |
| Loves Holding aktiebolag | Nyköping | 0 tkr |
| Lövtuna AB | Trosa | 0 tkr |
| Lowalba Holding AB | Eskilstuna | 0 tkr |
| LSS Sweden AB | Strängnäs | 0 tkr |
| L.Ström Holding AB | Nyköping | 0 tkr |
| LTA AB | Gnesta | 0 tkr |
| LTELMKON AB | Tierp | 0 tkr |
| LTR Vision AB | Kvicksund | 0 tkr |
| Ludgo bete AB | Nyköping | 0 tkr |
| Ludvig Axling AB | Strängnäs | 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 |
| LUMENSTORM AB | Stallarholmen | 0 tkr |
| Luminatum Advice AB | Gnesta | 0 tkr |
| Lumos Holding AB | Malmköping | 0 tkr |
| Lumpuz Holding AB | Eskilstuna | 0 tkr |
| Lunasfer AB | Trosa | 0 tkr |
| Lundblad Holding i Nyköping AB | Nyköping | 0 tkr |
| Lundbygruppen Holding AB | Torshälla | 0 tkr |
| Lund Holding AB | Torshälla | 0 tkr |
| LUW Capital AB | Katrineholm | 0 tkr |
| Luwi Entreprenad AB | Enstaberga | 0 tkr |
| Luwini AB | Eskilstuna | 0 tkr |
| Luxiupa AB | Eskilstuna | 0 tkr |
| LWM Livs i Strängnäs Aktiebolag | Strängnäs | 0 tkr |
| Lychsa Invest AB | Nyköping | 0 tkr |
| LYFT Company AB | Eskilstuna | 0 tkr |
| Lykalia K Aktiebolag | Västra Näshulta | 0 tkr |
| LYS - Lift Your Soul aktiebolag | Ödeshög | 0 tkr |
| Lytec Holding AB | Eskilstuna | 0 tkr |
| Macho Holding AB | Jönåker | 0 tkr |