Bedrift J - Heggedal
- Jafari
- Jemis AS
- Jenkins AS
- Jojema AS
- Justbolig AS
- Johnsen Willy
- Julsrud Forskning
- Jarle Wiggen
- Jeanita Edholm Enk
- Jørgen Lønø
- Jevgenija Kirpicnikova
- Joy Helse AS
- Jlp Invest AS
- Jansen Tuva
- Johan Skjellestad
- Jak-Invest AS
- Jack Lauridsen
- Job Trans AS
- Ja-Du FilmStudio AS
- Jon Nilsen Consulting
- J.L. Kjellin
- Joanna Porebska Hjemmerenhold
- Jorunn Hjertvik Legetjenester
- Jon Haugland Bygg AS
- Jannicke Rustad Remen
- Jph 289 Holding AS
- Jon Tore Sand
- Jan Erik Andreassen
- Je Plassen Holding AS
- Jon Tore Sand AS
- Jehovas Vitner - Asker Menighet
- Johansen Snø & Minianlegg
- J.Balaan Zarco Rengjøring
- Jensen Skyteskole Salg og Service
- Jehovas Vitner - Asker Polske Menighet
- Jr Special Make-Up Effects Janne Røhmen