| Jaxtorgets livs AB | Borlänge | 0 tkr |
| JB Bygginvest AB | Älvdalen | 0 tkr |
| J Bergman Invest AB | Borlänge | 0 tkr |
| JBF Holding AB | Borlänge | 0 tkr |
| JBJ Consulting AB | Borlänge | 0 tkr |
| J & B Tyskhagen Holding AB | Vikarbyn | 0 tkr |
| J Cederhorn Invest AB | Borlänge | 0 tkr |
| JC Invest konsult AB | Borlänge | 0 tkr |
| JD Detaljhandel AB | Falun | 0 tkr |
| JE Dalarna AB | Borlänge | 0 tkr |
| Jehia Holding AB | Borlänge | 0 tkr |
| Jens Hälleberg Holding AB | Mora | 0 tkr |
| Jerko AB | Falun | 0 tkr |
| Jernström Bygg AB | Ludvika | 0 tkr |
| Jesper & Emma Holding AB | Borlänge | 0 tkr |
| Jesper Hansen Förvaltning AB | Falun | 0 tkr |
| Jesper&Mathias Photography AB | Borlänge | 0 tkr |
| Jessica Consulting AB | Borlänge | 0 tkr |
| JF Development AB | Stockholm | 0 tkr |
| JF Fastighetsförmedling AB | Falun | 0 tkr |
| JG Consult AB | Avesta | 0 tkr |
| JH Racing AB | Hedemora | 0 tkr |
| J.I Bergenström Holding AB | Borlänge | 0 tkr |
| Jima Holding AB | Idre | 0 tkr |
| Jimmys Holding i Smedjebacken AB | Smedjebacken | 0 tkr |
| JITU AB | Säter | 0 tkr |
| Jiwes Kläder AB | Säter | 0 tkr |
| J & J Fastigheter i Dalarna AB | Smedjebacken | 0 tkr |
| JKC Holding AB | Falun | 0 tkr |
| JK Kapitalförvaltning AB | Svärdsjö | 0 tkr |
| JKÖstman förvaltning AB | Falun | 0 tkr |
| JLB Group AB | Orsa | 0 tkr |
| J Lindström Konsult AB | Fors | 0 tkr |
| JL Landhskap Holding AB | Falun | 0 tkr |
| JLML i Bergslagen AB | Krylbo | 0 tkr |
| JL Restauranger AB | Borlänge | 0 tkr |
| JME Business Management AB | Borlänge | 0 tkr |
| JM Hellgren AB | Björbo | 0 tkr |
| JMT Holding AB | Mora | 0 tkr |
| JNGE i Avesta AB | Avesta | 0 tkr |
| J Norlings Fastighetsförvaltning AB | Falun | 0 tkr |
| Joachim Richert Invest AB | Sälen | 0 tkr |
| Joakim Dofs Holding AB | Falun | 0 tkr |
| Joängets Fjällgård AB | Katrineholm | 0 tkr |
| Jobskôlla Invest AB | Siljansnäs | 0 tkr |
| Joffer Consulting AB | Ludvika | 0 tkr |
| Johan Barr i Orsa AB | Orsa | 0 tkr |
| Johan Eklund Holding AB | Falun | 0 tkr |
| Johan Fogdebacken Bygg AB | Falun | 0 tkr |
| Johan Hardinger AB | Leksand | 0 tkr |