Bedrift J - Sørum
- Julton
- Janda
- Jdev AS
- Johan Lystad
- Jørgen Sletholen AS
- Jorun Hovind
- John Hoel
- Johannes Eid
- Joar Hylland Mikkelsen
- Jutta Mikkola MK
- Jørn Atle Bingen
- JS-Elektro Syktus
- Julia Stegen Hagen
- John Arne Opsahl
- John Ivar Sæther
- Jon Arve Rognerud
- John Arne Eid
- Janson & Langerud AS
- Jon Ove Bergseth
- Jan Ole Dahl
- Jan Arild Moe
- Jan Arild Moe
- Just Perfekt Czr Wolski
- Jan Frode Røsaasen Løkken