Bedrift J - Frosta
- Jordnær AS
- Jonas Moksnes
- Jonas Hagerup
- John Remman
- Johan Hernes
- Jakobsson Designs
- Jonas Rekkebo
- Jmv Næring AS
- Johan Fossli AS
- Jakobsson Electronic
- Jostein Oldret
- Jostein Hovdal
- Johan Lein
- Jegtvolden Bilsalg
- Jøran Brenne
- Jab-Holding AS
- Joar Rekkebo
- Jens Holberg
- Jotunheimen Arrangement AS
- Ja Gulvsystemer AS
- Joval Holding AS
- Jia Holding AS
- Joval Eiendom AS
- Janne Viktil AS
- Jefossum Holding AS
- Jon Magne Rekkebo
- Johan Petter Remman
- Johan Petter Brenne
- Jon Asbjørn Hogstad
- Johan Petter Skogseth
- Jon Andor Hovdal
- Johan Morten Haugan
- Jefferson Acero Dagoc
- Jon Arve Kjørsvik
- Johan Arnt Stene
- Jan Erik Leinslie
- Jens Einar Hagerup
- Jens Olav Helland
- Janne Mette Valberg
- Jørn August Buchholdt
- Jarl Holding Frosta AS
- Jan Morten Hokstad
- Joker Eiendom 1 AS
- Johan Pedersen Holding AS
- Jan Erik Sørheim
- John-Arve Bratsvedal Remman
- J M Vold Holding AS
- Jubs Bygg og Industri AS
- Jon Olav Alstad Musikk