| León Reyes Holding AB | Nyköping | 0 tkr |
| LEsjo Holding AB | Stigtomta | 0 tkr |
| Levio Group AB | Nyköping | 0 tkr |
| L Holding AB | Nyköping | 0 tkr |
| Lids Medical Consulting Ljungberg AB | Oxelösund | 0 tkr |
| Lilla Udden AB | Nyköping | 0 tkr |
| Lindefast i Syd AB | Nyköping | 0 tkr |
| Lindhäll Holding AB | Nyköping | 0 tkr |
| Linjebesiktningar Lasse Johansson Invest AB | Nyköping | 0 tkr |
| Live Forever Nyköping AB | Nyköping | 0 tkr |
| LivsKnuten AB | Nyköping | 0 tkr |
| LJBE Förvaltning AB | Bettna | 0 tkr |
| LMNEC AB | Nyköping | 0 tkr |
| Lockbox Verksamhet Mälardalen AB | Stockholm | 0 tkr |
| Locker Holding AB | Nyköping | 0 tkr |
| LOCO1 AB | Nyköping | 0 tkr |
| Lonntorp Invest AB | Stigtomta | 0 tkr |
| Lottas AB | Nyköping | 0 tkr |
| Loves Holding aktiebolag | Nyköping | 0 tkr |
| L.Ström Holding AB | Nyköping | 0 tkr |
| Ludgo bete AB | Nyköping | 0 tkr |
| Lundblad Holding i Nyköping AB | Nyköping | 0 tkr |
| Luwi Entreprenad AB | Enstaberga | 0 tkr |
| Madeleine Scherlin Services AB | Lidingö | 0 tkr |
| MaEve Teknikkonsult AB | Nyköping | 0 tkr |
| Magnus Ekstrand Fastigheter AB | Nyköping | 0 tkr |
| Magnus Fredriksson invest AB | Nyköping | 0 tkr |
| MagosHub AB | Nyköping | 0 tkr |
| Maison Forte Fastighetsutveckling AB | Eskilstuna | 0 tkr |
| Malmbryggshagen Invest AB | Nyköping | 0 tkr |
| Manfri AB | Nyköping | 0 tkr |
| Måns Eriksson Holding AB | Tystberga | 0 tkr |
| Mapimi Förvaltning AB | Nyköping | 0 tkr |
| Marcus Annebäck AB | Nyköping | 0 tkr |
| Marianne kliniken i Eskilstuna AB | Nyköping | 0 tkr |
| Market Import Sweden Aktiebolag | Nyköping | 0 tkr |
| Marsviksstrand AB | Nyköping | 0 tkr |
| MASEN & ERIKSSON HOLDING AB | Nyköping | 0 tkr |
| Maskindesign Ingemar Lundin Aktiebolag | Tystberga | 0 tkr |
| Mats Dahlberg Holding AB | Nyköping | 0 tkr |
| Mats Eriksson i Stigtomta AB | Stigtomta | 0 tkr |
| Mats Haglund Förvaltning AB | Stavsjö | 0 tkr |
| Matte A Invest AB | Nyköping | 0 tkr |
| Mattias Forsberg Holding AB | Nyköping | 0 tkr |
| Mauni invest AB | Stigtomta | 0 tkr |
| Maxat AB | Nyköping | 0 tkr |
| M. Brunelius Holding AB | Nyköping | 0 tkr |
| MCLS Holding AB | Nyköping | 0 tkr |
| MEDAM AB | Stockholm | 0 tkr |
| Medibyte AB | Enskede | 0 tkr |