Bedrift J - Rena
- Jesperpus AS
- Jahn Kiønig
- Jurgita Grikstiene
- Jahn Pedersen
- Jacøb Gercans
- Jernia Rena AS
- Jernia rena
- Jørn Hagebakken
- John Johnsen AS
- John Galten AS
- Jøran Øylien Nyberget
- Johan Agnar Horndalen
- Jens Gunnar Voldmo
- Johansen Slaatsveen Sounds
- Jonas H. Jensen
- Jan Roger Ernstsen
- Jørgen Asbjørn Nergård
- Jan Bjørke-Olssen
- Jahren Eiendom Rena AS
- Jorun Holtet Øverby
- Jon Kåre Myrene
- Jan Inge Moe