| Isefjord Islingby 22:321 AB | Falun | 0 tkr |
| Isolight AB | Gustafs | 0 tkr |
| Isotec i Mora Aktiebolag | Sollerön | 0 tkr |
| Isvarg Cub83 AB | Roknäs | 0 tkr |
| Itämaa Investment AB | Härnösand | 0 tkr |
| Ivans Barbershop AB | Falun | 0 tkr |
| IVIPO AB | Falun | 0 tkr |
| J2 Obsido AB | Falun | 0 tkr |
| JAAW Holding AB | Avesta | 0 tkr |
| JaBa Holding AB | Falun | 0 tkr |
| Jacob Alexander Gustafsson AB | Sollerön | 0 tkr |
| JADB Holding AB | Borlänge | 0 tkr |
| Jäger Holding AB | Smedjebacken | 0 tkr |
| JAHA:s Fastigheter Aktiebolag | Säter | 0 tkr |
| JaHe Förvaltning AB | Svärdsjö | 0 tkr |
| JAK Holding i Rättvik AB | Rättvik | 0 tkr |
| Jakob Engvall Aktiebolag | Avesta | 0 tkr |
| JAK Siljan AB | Rättvik | 0 tkr |
| Jalkenäs ProdQ AB | Falun | 0 tkr |
| Jämt i Dalarna Holding AB | Falun | 0 tkr |
| Jämtoga AB | Orsa | 0 tkr |
| Jan Heramb Förvaltning AB | Hedemora | 0 tkr |
| Jan Jansson Aktiebolag | Malung | 0 tkr |
| Jan Nyström Struktur AB | Avesta | 0 tkr |
| Jan Pettersson Holding AB | Bromma | 0 tkr |
| Järnvägsportalen AB | Borlänge | 0 tkr |
| Jasavi AB | Linghed | 0 tkr |
| Jas Fastigheter AB | Borlänge | 0 tkr |
| JA Svedberg Holding AB | Falun | 0 tkr |
| JaTi Restaurang & Konsult AB | Falun | 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 |
| Jenny Sofia Holding i Mora AB | Mora | 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 |