| JC Jörnsved Holding AB | Norrtälje | 0 tkr |
| Jeroc Holding AB | Rimbo | 0 tkr |
| Jevifa AB | Norrtälje | 0 tkr |
| JF & Co AB | Norrtälje | 0 tkr |
| JFK Handels Aktiebolag | Norrtälje | 0 tkr |
| Jim Elfvengren Bygg & Förvaltning AB | Norrtälje | 0 tkr |
| JIN AB | Norrtälje | 0 tkr |
| JKTP Holding AB | Väddö | 0 tkr |
| J L A Glas AB | Norrtälje | 0 tkr |
| JL Fastighetsförvaltning AB | Norrtälje | 0 tkr |
| JM Pålgård AB | Edsbro | 0 tkr |
| JMP Invest Rimbo AB | Norrtälje | 0 tkr |
| Jocke Norberg Holding AB | Hallstavik | 0 tkr |
| Joel Flink AB | Norrtälje | 0 tkr |
| JOEMEL AB | Norrtälje | 0 tkr |
| Johanna Alföldi AB | Edsbro | 0 tkr |
| Johan Winge Fastigheter AB | Norrtälje | 0 tkr |
| Johan Winge Holding AB | Norrtälje | 0 tkr |
| Jonas Lundqvist Byggtjänst Aktiebolag | Norrtälje | 0 tkr |
| Jones Creative Solutions AB | Norrtälje | 0 tkr |
| Jörgen Eglund Entreprenad AB | Stockholm | 0 tkr |
| Jörgen Nylund AB | Norrtälje | 0 tkr |
| JPSH Sverige AB | Rimbo | 0 tkr |
| JR Svensson Holding AB | Norrtälje | 0 tkr |
| J.son i Norrtälje AB | Norrtälje | 0 tkr |
| Junhager Fastighets AB | Hurva | 0 tkr |
| Juniper River AB | Rö | 0 tkr |
| Kaalanebin Holding AB | Norrtälje | 0 tkr |
| Kakelhörnan i Täby AB | Norrtälje | 0 tkr |
| Kallharan AB | Lidingö | 0 tkr |
| Karin Tirén Gustafsson AB | Hallstavik | 0 tkr |
| Karl-Ivar Holding AB | Väddö | 0 tkr |
| Karl J Company AB | Danderyd | 0 tkr |
| Karlssons Specialtransport AB | Riala | 0 tkr |
| KEA KONSULT AB | Rimbo | 0 tkr |
| Keen Eyes Solutions AB | Norrtälje | 0 tkr |
| KEM2 Förvaltnings AB | Norrtälje | 0 tkr |
| Kent Lindström Invest AB | Norrtälje | 0 tkr |
| KF Roslagen AB | Norrtälje | 0 tkr |
| KGT Gruppen AB | Norrtälje | 0 tkr |
| KH Process och Energiteknik AB | Odensbacken | 0 tkr |
| Kippinge Förvaltning AB | Rimbo | 0 tkr |
| KJELL ÖSTERMAN TAXI Aktiebolag | Norrtälje | 0 tkr |
| Klarin1 AB | Adress Saknas | 0 tkr |
| Klövexperten Rådmansö AB | Gräddö | 0 tkr |
| Knoge Holding AB | Norrtälje | 0 tkr |
| Kolcom Consulting AB | Norrtälje | 0 tkr |
| Kolsviks Bryggväg Holding AB | Täby | 0 tkr |
| Koluddens fastighets Aktiebolag | Stockholm | 0 tkr |
| Konsultation fastighet Norrort AB | Norrtälje | 0 tkr |