Bedrift J - Marnardal
- Jovenit AS
- Jarle Olsen
- Jordanas Rimeikis
- JDD Maskin AS
- Jonny Haraldstad
- Joachim Thorvaldsen
- Jarl Manneråk
- John Sveinall
- Jensen gård
- Jdd Maskin AS
- Jdd Utstyr AS
- Jdd Maskin AS
- Jostein Åsland Enk
- Joker Marnardal
- Jonn Arild Gill
- Jenny Kleiven Garder
- Ja-Ko Eiendom AS
- Jesper Kvarenes Bjørnestøl
- Jørgen Øslebø Knutsen
- John Terje Bakken
- J Manneråk Smie & Sveiseservice AS