| Nordklippan Lådkameran AB | Saltsjö-Boo | 0 tkr |
| Nordmedicin AB | Stockholm | 0 tkr |
| Nordpart AB | Danderyd | 0 tkr |
| Nords Medtech AB | Saltsjö-Boo | 0 tkr |
| Nöremark Consulting AB | Saltsjöbaden | 0 tkr |
| Norenski AB | Älta | 0 tkr |
| Norrby Data Aktiebolag | Nacka | 0 tkr |
| Norrsma Consulting AB | Saltsjöbaden | 0 tkr |
| Norrviken Fastigheter Holding AB | Saltsjöbaden | 0 tkr |
| North East West South Airlines AB | Älta | 0 tkr |
| Northern Vision Ventures AB | Saltsjö-Boo | 0 tkr |
| North Oakhill group AB | Saltsjö-Boo | 0 tkr |
| Notalp Logistik AB | Saltsjö-Boo | 0 tkr |
| Notalp Logistik II AB | Saltsjö-Boo | 0 tkr |
| Notalp Logistik III AB | Saltsjö-Boo | 0 tkr |
| Novestia Konsult AB | Nacka | 0 tkr |
| Novinum AB | Nacka | 0 tkr |
| Nowelto AB | Nacka | 0 tkr |
| NoWerCo AB | Saltsjö-Boo | 0 tkr |
| Nowius Motor & Verkstad AB | Västerhaninge | 0 tkr |
| Nr:27 AB | Saltsjö-Boo | 0 tkr |
| NSM MediaProduktion Aktiebolag | Stockholm | 0 tkr |
| Numbers Analytics Sweden AB | Saltsjöbaden | 0 tkr |
| Nya Affärshuset Lindell & Sohlberg AB | Saltsjöbaden | 0 tkr |
| Nya Romarriket i Saltsjö-Boo AB | Gustavsberg | 0 tkr |
| NyAx AB | Nacka | 0 tkr |
| Nyckelviken Konsult AB | Strängnäs | 0 tkr |
| Nylander & Co Investering AB | Saltsjöbaden | 0 tkr |
| Nyströms Utbildningskonsult AB | Stockholm | 0 tkr |
| Nytt Grepp Stockholm AB | Nacka | 0 tkr |
| OATP On Air Travelproduction Aktiebolag | Saltsjö-Boo | 0 tkr |
| Öberg & Partners AB | Saltsjö-Boo | 0 tkr |
| O-Comanche Djur & Natur AB | Norrtälje | 0 tkr |
| Ocon Invest AB | Saltsjö-Boo | 0 tkr |
| OCT Kapitalförvaltning AB | Saltsjö-Boo | 0 tkr |
| Odda Holding AB | Vendelsö | 0 tkr |
| Odd Parity AB | Gustavsberg | 0 tkr |
| Offecto AB | Gagnef | 0 tkr |
| Off-White AB | Åsarna | 0 tkr |
| Ogallala Aktiebolag | Saltsjöbaden | 0 tkr |
| Ogallala Holding AB | Saltsjöbaden | 0 tkr |
| Ogeborgen AB | Nacka | 0 tkr |
| Ohlind, Ohlsson & Lindström Entreprenad AB | Nacka | 0 tkr |
| OINF Invest AB | Saltsjö-Boo | 0 tkr |
| OJOB AB | Saltsjö-Duvnäs | 0 tkr |
| Okasmaa Holdings AB | Nacka | 0 tkr |
| O'Konor Invest AB | Saltsjöbaden | 0 tkr |
| Oktatrol AB | Saltsjö-Boo | 0 tkr |
| OKV Holding AB | Nacka | 0 tkr |
| Ola Strömberg International Aktiebolag | Stockholm | 0 tkr |