| Jörgen Hellberg Control AB | Bjursås | 0 tkr |
| JOSJO Fastighetsförmedling AB | Falun | 0 tkr |
| J-son Projekt i Falun AB | Falun | 0 tkr |
| JS Twin Speed Aktiebolag | Falun | 0 tkr |
| JTNS Holding AB | Falun | 0 tkr |
| Julove Holding AB | Luleå | 0 tkr |
| Jusmon SYL AB | Svärdsjö | 0 tkr |
| JW MarkBygg AB | Falun | 0 tkr |
| Kalkylatorn 6 AB | Falun | 0 tkr |
| Källviken Förvaltning AB | Falun | 0 tkr |
| Källviksberget AB | Falun | 0 tkr |
| Kalma Invest AB | Rättvik | 0 tkr |
| KAMA Bolagen AB | Falun | 0 tkr |
| Kårebocken AB | Falun | 0 tkr |
| Karin Stenhamre Förvaltning AB | Falun | 0 tkr |
| Karl-Erik Andersson Revision Aktiebolag | Falun | 0 tkr |
| Karl-mats i Svärdsjö Aktiebolag | Svärdsjö | 0 tkr |
| Karlslund i Falun AB | Falun | 0 tkr |
| Kasperlito AB | Falun | 0 tkr |
| Kazi Properties i Dalarna AB | Falun | 0 tkr |
| KBK SWEDEN AB | Falun | 0 tkr |
| Kenneth Höglund Holding AB | Falun | 0 tkr |
| Kenneth Rudolph Förvaltning AB | Toftbyn | 0 tkr |
| KIBOC AB | Hovås | 0 tkr |
| Kigada Facility AB | Falun | 0 tkr |
| KIGADA Holding AB | Falun | 0 tkr |
| KJEMAS AB | Falun | 0 tkr |
| Klas Anders Nygårds Holding AB | Falun | 0 tkr |
| Klockarmats Peter Aktiebolag | Grycksbo | 0 tkr |
| K M FYHR AB | Falun | 0 tkr |
| K & M Group AB | Falun | 0 tkr |
| Knektbacken Kapital AB | Sundborn | 0 tkr |
| Knektbo Holding AB | Falun | 0 tkr |
| KOIFOL AB | Falun | 0 tkr |
| Konsultbolaget i Svärdsjö AB | Svärdsjö | 0 tkr |
| Koon invest AB | Falun | 0 tkr |
| Koon Konsult AB | Tomelilla | 0 tkr |
| Kopparbäck Konsult AB | Falun | 0 tkr |
| Kopparberg International AB | Kopparberg | 0 tkr |
| Kopparhinken AB | Falun | 0 tkr |
| Kopparinvest AB | Falun | 0 tkr |
| Kopparlinden Holding AB | Falun | 0 tkr |
| Koppartornet AB | Falun | 0 tkr |
| Korpnäs Udd Invest Aktiebolag | Bjursås | 0 tkr |
| Korsgården Holding AB | Falun | 0 tkr |
| Korsnäs Elektriska, Olle Haglund Aktiebolag | Falun | 0 tkr |
| Korsnäs Strand Förvaltning AB | Djursholm | 0 tkr |
| Korsnäs Vika LBC AB | Falun | 0 tkr |
| KPMJ Consulting AB | Falun | 0 tkr |
| Kraftplan Holding AB | Falun | 0 tkr |