Bedrift J - Kjelsås
- Joamar AS
- Jec AS
- Jarek AS
- Josevo AS
- Joranor AS
- Jotinor AS
- Jærhagen Holdbart
- Jessheim Holdbart
- Joker Kjelsås
- Jorgen Westerberg
- Johansen Kultur
- Jørn Knustad
- Jgb Eiendom AS
- Jens Gundersen A/S
- Jlf Invest AS
- Join Consulting AS
- Jon Skurdal
- Janne Hansen
- Jphs Invest AS
- Jon Skurdal
- J. Apelseth
- Jensen Consulting
- Johan Siqveland
- Jayson Endaya
- Jensen Tind
- Julie Bodahl
- Jørgenvaag Donutplug
- Julie Moviken
- Julie Oredam
- Jotinor III AS
- Jotinor II AS
- Johannes Drægni
- Johannes Drægni
- Joly Nueva
- Jeppe Stensland
- Johannes Hvidsten
- Johnny Singh
- Ja Industrier AS
- Jeløy Ingeniørforretning AS
- Jønk Frysja AS
- Julie Dahl Fysioterapi
- Jeffrey Scott Engberg
- J.Harøy Fysioterapi
- Johan Helland - Musiker
- Jan-Erik Hybertsen
- Janne Helen Skranes
- John Erik Kaada
- J. K. Holding AS
- Jon Cederbrand Arkitektur AS
- Jonas Aarre Sommarset
- James Newell Unbounded
- Johs Bjerke Elektro DA
- Jens Lauge Sørensen
- Johnsen Ingunn Vold
- John-Arne Ø. Gundersen
- Jørn Are Vigestad Berge AS
- Jchristiansen Consulting Jan Christiansen
- Jon Sindre Fjellvang Klonteig
- Julina Andersen Kahavidanalage Don
- Julius & Ørenberg Bokbinderi
- Julie Nikoline & Alfred Angel AS
- Jms Measurements Jaroslaw Marek Majchrzak
- Jcn Media Joachim Corneliussen Nilsen
- Journalist og Fotograf Marte Nordahl