Firma J - Oppsal
- Jørn
- Joaila
- Justyna AS
- Jørgen Hegstad
- Jmr Transport AS
- Jan Langerud
- Jos-Matic
- Jafs Oppsal
- Juvelen Oppsal
- Jkj Invest AS
- Jot Eiendom AS
- Jonbekk Elektro AS
- Jon Lømo
- Jens Nørve
- Jørn Walseth
- Jovanca Mouafo Mague
- Jan Arild Eggesvik
- Jeylan Abdulmajid Hussen
- Jan Kaare Bjerring
- Johnny Celius-Ewald
- Jesper Holmkvist Svenssen
- Jacobsen Alex Gama
- Jørgensen Erik Peder
- Jostein Rosfjord Askim
- Jon Berge Holden
- Jon Svinsås Mosbakk
- Joanna Rzadkowskas Skribenttjenester
- James Walker Norge AS
- Jens-Aleksander Johnsen
- Jon Austrheim Multimodal Consulting
- Just You Byanita Lauritsen
- Jan Erik Solberg Johansen
- Just You Byanita Lauritsen
- Jarlsbo Media og Fritid
- JT Bygg & Eiendom AS
- Jobb Smartere Grete Thorsteinsen
- Janssons Kostymesøm og Design
- Johnsen Andrea Kristine Gloppen
- J.E.A. Varehandel AS
- Jeje Konsult Jan-Erik Jensen
- Jesus the Everliving Savior Ministries
- Jørnsløkkveien 5-27 Tingsrettslige Sameie