| Matservice Fest & Restaurang Aktiebolag | Kalmar | 0 tkr |
| Mats-Robert Förvaltning AB | Kalmar | 0 tkr |
| Matsu Consulting AB | Löttorp | 0 tkr |
| Mattias Bäckström Holding AB | Hultsfred | 0 tkr |
| Max Butiksutveckling AB | Borgholm | 0 tkr |
| Maximera AB | Kalmar | 0 tkr |
| Maxsell i Kalmar AB | Läckeby | 0 tkr |
| MBB HOLDING AB | Västervik | 0 tkr |
| MB Fastighetsutveckling AB | Kalmar | 0 tkr |
| MB Förvaltning och Service AB | Mörbylånga | 0 tkr |
| MDC Consulting AB | Kalmar | 0 tkr |
| MEBPTEK Consulting AB | Färjestaden | 0 tkr |
| MediaAnalys Holding AB | Ljungbyholm | 0 tkr |
| MediaBygg Konsult i Sverige AB | Kalmar | 0 tkr |
| Medi Adri Aktiebolag | Kalmar | 0 tkr |
| Mediafabriken i Kalmar Aktiebolag | Kalmar | 0 tkr |
| MediaSken AB | Kalmar | 0 tkr |
| Mediflo AB | Kalmar | 0 tkr |
| M. Eeks Rör AB | Vimmerby | 0 tkr |
| Me-eli Entreprenad AB | Oskarshamn | 0 tkr |
| Mehlq Experience Aktiebolag | Kalmar | 0 tkr |
| Meholder AB | Kalmar | 0 tkr |
| MEIA Uthyrning AB | Färjestaden | 0 tkr |
| Mejo AB | Oskarshamn | 0 tkr |
| Melchander Consulting AB | Västervik | 0 tkr |
| Melco AB | Bergkvara | 0 tkr |
| Melcob Konsult AB | Kalmar | 0 tkr |
| Melcob Redovisning AB | Färjestaden | 0 tkr |
| Melivi AB | Nybro | 0 tkr |
| Melkea AB | Kalmar | 0 tkr |
| Mellrock AB | Kalmar | 0 tkr |
| Mercatus Holding AB | Vimmerby | 0 tkr |
| Merecta AB | Färjestaden | 0 tkr |
| Metal-Factory Sweden AB | Vimmerby | 0 tkr |
| Metall o. Robot-Teknik Kjell Nilsson Aktiebolag | Rockneby | 0 tkr |
| M Fritid Invest AB | Mönsterås | 0 tkr |
| MGA Projektstöd AB | Kalmar | 0 tkr |
| M&G Johansson Aktiebolag | Kalmar | 0 tkr |
| MGL Consult AB | Västervik | 0 tkr |
| MG Property Invest AB | Kalmar | 0 tkr |
| M Hagman AB | Nacka | 0 tkr |
| M&H Förvaltning i Tenhult AB | Tenhult | 0 tkr |
| Mia Mia AB | Färjestaden | 0 tkr |
| Michael R AB | Kalmar | 0 tkr |
| Michel Hanna Holding AB | Torsås | 0 tkr |
| Micke Kjellgren i Kalmar AB | Kalmar | 0 tkr |
| Midan AB | Oskarshamn | 0 tkr |
| Middlestone Invest AB | Kalmar | 0 tkr |
| MIJT AB | Kalmar | 0 tkr |
| Mikael Sköldenklint AB | Kalmar | 0 tkr |