Bedrift J - Rolvsøy
- Jyb AS
- Jaa AS
- Joppe AS
- Johansen Omsorg
- Jysk Fredrikstad
- Jernia Østfoldhallene
- Johansson Ivan
- Je Holding AS
- Jobo Tepper AS
- Juvelen Østfoldhallen
- Jula Fredrikstad
- Josephine Mwando
- Jct Kolseth
- Johansen Østers
- Jensen Johnny
- Josof Transport
- Jlj Holding AS
- Jørgensen Ragnar
- Johansen Energi AS
- Jeanette Heidenstrøm
- Jack & Jones
- Jan-Freddy Pedersen AS
- John Johansen Holding AS
- Juel Johansens Bilruter ANS
- Johansen Åge Tormod
- Joma Trading Norway AS
- Jesus er Herre
- Jensen City Lyd
- Jamal Ummi Ali
- Jens Tore Veum
- Jernbanevakt og Elsikkerhet AS
- Jonna Nordvind Birkefeld
- Johansen Jan Erik
- Jon Arne Fosby
- jem & fix Fredrikstad
- Johnsen - Consult And Engineering
- Jan Werner Pettersen Consulting
- Jan Auto Jelal Ali
- Jpg Jon Pablo Gjekstad
- Jensen Troll Møbler & Troll Design