Bedrift J - Grefsen
- Josefine
- Jahalst AS
- Johannessen
- Jorgen Westerberg
- Jfremming Invest AS
- Jk Technology Ltd
- Jb Maling AS
- Jk Technology Ltd
- Jostein Rise
- Jølstad Fagforening
- Johnstone Foto
- JS Brox
- Josefine Visescene
- Jansen Forskningsformidling
- Julian Söderberg
- Jostein Hallen
- Jorun Jensen
- Jems Holding AS
- Johansen VVS AS
- Jakub Pugacz
- Johnsen Cecilie Cavallie
- Jenny M. Rørvik
- Journalist Sigri Sandberg
- Jo Erik Brøyn
- Jens Bernhard Grøgaard
- Joana Peace Mungal
- Jael Esilaba Mbeya
- Jølstad Begravelsesbyrå Avd Oslo
- Jølstad Begravelsesbyrå Grefsen
- Jørn Simen Øverli
- Jølstad Petter Andre
- Jens Ivar Brox
- J.R. Holding AS
- Jibo Jill Bottolfsen
- Jahr & Døtre AS
- Jon-Arild Eberson
- John Arvid Haukeberg
- Jan-Robert Lund
- Jonathan Laulund Transport
- Jan Meling Holding AS
- Jorun Jensen Psykologhjelp
- Johannessen Arne Christian
- Jonas Østhassel Film
- Julie Elise Hauge AS
- Jacobsen-Pearson Patrick
- Johan-Egil Storsveen
- Job Health Consulting AS
- Jan Victor Qian
- Johansen Medant Konsult
- Jonas Fremstad Holding AS
- Ja Falk Eiendomsanalyse- og Utvikling