| Mivie AB | Sollentuna | — |
| MMH18 AB | Sollentuna | — |
| MNTL Handelsbolag | Sollentuna | — |
| MOB bygg AB | Sollentuna | — |
| MONOTERRA AB | Upplands Väsby | — |
| MONTRENE AB | Sollentuna | — |
| Morgan Holm AB | Sollentuna | — |
| Moshi Gruppen AB | Sollentuna | — |
| Moto Sweden AB | Sollentuna | — |
| Movement360 AB | Sollentuna | — |
| Mrad Juridik AB | Sollentuna | — |
| MTDS Service Kommanditbolag | Sollentuna | — |
| MTDS Turnummerspecialisten Kommanditbolag | Sollentuna | — |
| MTRA Medicine Handelsbolag | Sollentuna | — |
| Musfirat Magfirat Handelsbolag | Sollentuna | — |
| MusikThalia Kommanditbolag | Sollentuna | — |
| MV Cleanroom AB | Sollentuna | — |
| MYON Handelsbolag | Sollentuna | — |
| MYZ Nexus AB | Sollentuna | — |
| MZA Allservice AB | Sollentuna | — |
| Namazing Ventures AB | Sollentuna | — |
| Nariuka massage AB | Sollentuna | — |
| NaTaksha Consulting AB | Sollentuna | — |
| Naturprodukter & Utbildning i Sollentuna Kommanditbolag | Sollentuna | — |
| Navaro Management AB | Sollentuna | — |
| Ndusa AB | Sollentuna | — |
| Nea Internet Handelsbolag | Sollentuna | — |
| Neblina AB | Sollentuna | — |
| Nebulax Consulting AB | Sollentuna | — |
| NikanBygg AB | Sollentuna | — |
| Niklas Ekman Solutions AB | Sollentuna | — |
| Niklas Magnusson Konsult AB | Sollentuna | — |
| Nillas Vin & Essenser Kommanditbolag | Sollentuna | — |
| Nilsson Digital AB | Sollentuna | — |
| Nirva Spa i Sverige AB | Sollentuna | — |
| Nobell Labs AB | Sollentuna | — |
| Noboss AB | Sollentuna | — |
| NOOR ICT CONSULTANCY AB | Kista | — |
| Nordens Media AB | Kista | — |
| Nordic allservice AB | Sollentuna | — |
| Nordic Dynamics Solution AB | Sollentuna | — |
| Nordic Home Holding AB | Sollentuna | — |
| Nordic Leadership Partners AB | Sollentuna | — |
| NordicNutra handelsbolag | Sollentuna | — |
| Nordic Recovery AB | Sollentuna | — |
| Nordic Vanguard AB | Sollentuna | — |
| Nordvan AB | Bandhagen | — |
| Norell & Nilsson Fastigheter VVS & Ventilation Handelsbolag | Sollentuna | — |
| Norrort Fukt & Inomhusmiljö AB | Sollentuna | — |
| Norview Handelsbolag | Sollentuna | — |