| Nyvägen Utveckling AB | Falun | 0 tkr |
| Nyve Group AB | Avesta | 0 tkr |
| OakLeafBranch AB | Ludvika | 0 tkr |
| Oberget AB | Falun | 0 tkr |
| OBJECTIFY Aktiebolag | Gustafs | 0 tkr |
| Obsson AB | Säter | 0 tkr |
| Odenplace AB | Falun | 0 tkr |
| ÖE Future AB | Solna | 0 tkr |
| Oel AB | Sundborn | 0 tkr |
| Oellell Management o IT Consulting AB | Leksand | 0 tkr |
| OE Service AB | Mora | 0 tkr |
| OFF Design AB | Falun | 0 tkr |
| OffOff Teknik AB | Lerum | 0 tkr |
| OG Advizer AB | Enviken | 0 tkr |
| Ohana Ventures AB | Furudal | 0 tkr |
| OHMITECH AB | Sundborn | 0 tkr |
| Öje Turist Aktiebolag | Öje | 0 tkr |
| Oktoplus AB | Mora | 0 tkr |
| Ola Svedberg Färnäs AB | Färnäs | 0 tkr |
| Olde Multimedia Aktiebolag | Borlänge | 0 tkr |
| Old Tjikko invest AB | Frösön | 0 tkr |
| Olenius Holding AB | Hedemora | 0 tkr |
| Olhans Förvaltning AB | Hedemora | 0 tkr |
| Olhell AB | Falun | 0 tkr |
| Oliver Zwar AB | Falun | 0 tkr |
| Olle Gustafsson i Falun AB | Rättvik | 0 tkr |
| Olle Pers Holding AB | Dala-Husby | 0 tkr |
| Olles Däck i Falun AB | Falun | 0 tkr |
| Olov Gudmundsson Holding AB | Sälen | 0 tkr |
| Olsen Vatten- & Energiborrning AB | Hedemora | 0 tkr |
| Olsnäs Invest AB | Falun | 0 tkr |
| Omnier Holding AB | Ludvika | 0 tkr |
| OMNI Wellness AB | Borlänge | 0 tkr |
| Önder i Sälen AB | Sälen | 0 tkr |
| OneStrokeArt AB | Mora | 0 tkr |
| Onlineutbildarna Sverige AB | Orsa | 0 tkr |
| Önsgärdet Förvaltning AB | Falun | 0 tkr |
| OnTop Vision AB | Borlänge | 0 tkr |
| OPCLLO Vision AB | Borlänge | 0 tkr |
| Oppierklars AB | Säter | 0 tkr |
| OptiFriction AB | Hedemora | 0 tkr |
| Optimal Fot & Fysio Hedemora AB | Hedemora | 0 tkr |
| Ord & Kod AB | Falun | 0 tkr |
| Orek AB | Falun | 0 tkr |
| Organisation och IT-Konsulterna i Stennäset AB | Kristinehamn | 0 tkr |
| Originals Company AB | Leksand | 0 tkr |
| Ormbråten AB | Hedemora | 0 tkr |
| Ornells Lastmaskiner Aktiebolag | Fors | 0 tkr |
| Örnton Holding AB | Falun | 0 tkr |
| Oropendola Capital AB | Falun | 0 tkr |