| Jonas Lindström Skogstjänster AB | Enviken | 0 tkr |
| Jon Björ AB | Leksand | 0 tkr |
| Jones Elservice i Idre Holding AB | Idre | 0 tkr |
| Jon E Svensson AB | Falun | 0 tkr |
| JoniWeld AB | Borlänge | 0 tkr |
| Jonna Bodin Hansen Fastigheter AB | Leksand | 0 tkr |
| Jon Onsbacke Holding AB | Falun | 0 tkr |
| Jonsson ProjektStyrning AB | Falun | 0 tkr |
| Jonssons i Väsa AB | Falun | 0 tkr |
| Jonsson & Trygg AB | Borlänge | 0 tkr |
| JONY Fastigheter AB | Nusnäs | 0 tkr |
| Jordpäron Holding AB | Grycksbo | 0 tkr |
| Jörgen Edström Entreprenad i Grängesberg AB | Grängesberg | 0 tkr |
| Jörgen Hellberg Control AB | Bjursås | 0 tkr |
| Jörgen & Susanne Invest AB | Saxdalen | 0 tkr |
| Josefine Wallin AB | Falun | 0 tkr |
| Josef Wåhlin Invest AB | Folkärna | 0 tkr |
| JOSJO Fastighetsförmedling AB | Falun | 0 tkr |
| Josmyren Lindvallen Fastigheter AB | Göteborg | 0 tkr |
| J. Palander AB | Borlänge | 0 tkr |
| JPM Invest AB | Borlänge | 0 tkr |
| JR Holding i Ludvika AB | Ludvika | 0 tkr |
| JR Rostfria AB | Ludvika | 0 tkr |
| JS HJÄLPKRAFT AB | Västerås | 0 tkr |
| J-son Projekt i Falun AB | Falun | 0 tkr |
| JS Twin Speed Aktiebolag | Falun | 0 tkr |
| J Thorildsson Holding AB | Mora | 0 tkr |
| JTNS Holding AB | Falun | 0 tkr |
| Juhani Mielonen Förvaltning AB | Mora | 0 tkr |
| Juliy Holding AB | Ludvika | 0 tkr |
| Julove Holding AB | Luleå | 0 tkr |
| Jungfruviken Holding AB | Idre | 0 tkr |
| Jusmon SYL AB | Svärdsjö | 0 tkr |
| Justinås AB | Mora | 0 tkr |
| Just Invest i Älvdalen AB | Älvdalen | 0 tkr |
| J Westin Technology AB | Hedemora | 0 tkr |
| JW MarkBygg AB | Falun | 0 tkr |
| J Woxberg Invest AB | Borlänge | 0 tkr |
| K2 Holding AB | Krylbo | 0 tkr |
| Kadima Consulting AB | Ludvika | 0 tkr |
| Kaerby Investment AB | Borlänge | 0 tkr |
| KA-GU Motorsport AB | Ludvika | 0 tkr |
| Kåhléns Holding AB | Orsa | 0 tkr |
| Kakariki AB | Falun | 0 tkr |
| Kakel proffsen i Borlänge AB | Falun | 0 tkr |
| KALAM i Mora AB | Mora | 0 tkr |
| KALEMA AB | Borlänge | 0 tkr |
| Kalkylatorn 6 AB | Falun | 0 tkr |
| källarmästaren hda AB | Hedemora | 0 tkr |
| Källgården Utveckling AB | Vikarbyn | 0 tkr |