Bedrift J - Frogner
- Jeksla AS
- Jovo AS
- Johnson Power
- Ja VVS AS
- Johannessen Engineering
- Jeyakanthan Consulting
- Johansen Agility
- Joda Intertrade AS
- Jan Kopperud
- Jamal Maqbool
- Jensen Andreassen Enk
- Jorunn Skogseth
- Jb Montering AS
- Jsm Group AS
- Jømne Rekruttering
- Jømne Bilsalg
- Jj Bygg DA
- Joselin Invest AS
- Johansen Sjåførtjenesten
- Jag Services AS
- Jørgen Klemetsrud
- Jørn Morten Slaaen
- Jan Arild Enger
- Jose Sliva Ferreira
- Jaudzems Haf Transport
- Jan Petter Mæhlen
- Jalil Taxi Service
- J.K. Nyamekye Transport
- Jennys Fotpleie Jenny Kretzschmar
- JS Transport Janis Seksts
- Jba Renhold og Bygg AS
- Jelmar Service Tjenester Marcin Jelonek