| Julebygda Grendahus SA | Hospitality | 1987 |
| Jullen AS | | 2020 |
| Jurx AS | Professional & scientific | 2015 |
| Juseja AS | Real estate | 2015 |
| Justande AS | Professional & scientific | 2023 |
| Juta AS | Transport & logistics | 2020 |
| Juvelen AS | Real estate | 2026 |
| JVN34 AS | Real estate | 2021 |
| JWS Gruppen AS | Mining & quarrying | 2011 |
| JWS Maskin AS | Administrative & support | 2007 |
| JWS Prosjekt AS | Administrative & support | 2015 |
| Jysk Industrimontage Norge Nuf | Construction | 2013 |
| Jysla Kjekt AS | Arts & recreation | 2020 |
| Jæreggprodukter AS | Manufacturing | 2015 |
| Jæren Bruktbil AS | Wholesale & retail | 2023 |
| Jæren Hotell Eiendom AS | Real estate | 1991 |
| Jæren Kulde AS | Construction | 2014 |
| Jæren Multiservice AS | Construction | 2026 |
| Jæren Potetpakkeri AS | Wholesale & retail | 2008 |
| Jæren VVS AS | Construction | 2023 |
| Jærfjøla AS | Manufacturing | 2023 |
| Jærprosjekt AS | Construction | 2023 |
| Jærradioen AS | Information & communication | 1995 |
| Jærradiogruppen AS | Information & communication | 2002 |
| Jærradiogruppen Drift AS | Professional & scientific | 2005 |
| Jærradiogruppen Produksjon AS | Information & communication | 1997 |
| Jærstil AS | Construction | 2025 |
| Jærsølv Og Bunader AS | Wholesale & retail | 2004 |
| Jærvegen 561 AS | Real estate | 2026 |
| Jærveien 104-106 Holding AS | Financial services | 2024 |
| Jærveien 151 AS | Real estate | 2020 |
| Jærveien 4 AS | Real estate | 2011 |
| Jærveien 56 AS | Real estate | 2021 |
| Jærveien Trafikksenter AS | Wholesale & retail | 2014 |
| Jø Investeringsselskap AS | | 2021 |
| Jønningsheiveien Næringsareal AS | Real estate | 2018 |
| Jørgen Otteren AS | Wholesale & retail | 2001 |
| Jørn Rusbjerg AS | Administrative & support | 2011 |
| Jørpeland Utviklingsselskap AS | Real estate | 2009 |
| Jørpelandsgården AS | Real estate | 2006 |
| Jøs AS | Transport & logistics | 2011 |
| Jøs Eiendom AS | Real estate | 2020 |
| K Fløysvik AS | | 2025 |
| K Håkull Invest AS | | 2007 |
| K Import AS | Wholesale & retail | 2025 |
| K Lode Holding AS | Transport & logistics | 2005 |
| K Somby AS | Professional & scientific | 2005 |
| K Øgreid AS | | 2021 |
| K-Produksjon AS | Construction | 2012 |
| K. Invest AS | Manufacturing | 2005 |
| K. Rørheim AS | Transport & logistics | 2012 |
| K.D.B AS | | 2025 |
| K.G. Tveit AS | Real estate | 1983 |
| K.K. Holding AS | | 2026 |
| K.O. Sunde Invest AS | Financial services | 2012 |
| K.S.H. Eiendom AS | Wholesale & retail | 2007 |
| Ka We AS | Real estate | 2002 |
| Kaare Fjogstad Eiendom AS | Real estate | 1985 |
| Kadeni Bygg AS | Construction | 2022 |
| Kadovado AS | | 2025 |
| Kaffekongen AS | Wholesale & retail | 2025 |
| Kafferøst AS | Manufacturing | 2020 |
| Kafo Holding AS | | 2025 |
| Kai Eiendom AS | Real estate | 2004 |
| Kaia Hegre AS | Agriculture & fishing | 2019 |
| Kaimana Kapital AS | | 2023 |
| Kaiveien 13 AS | Real estate | 2022 |
| Kaizen AS | Professional & scientific | 2022 |
| Kaja AS | Wholesale & retail | 2005 |
| Kalibra AS | Financial services | 2016 |
| Kam Reime Holding AS | | 2008 |
| Kamil AS | Financial services | 2005 |
| Kamstål AS | Manufacturing | 2016 |
| Kanalveien 107 Invest AS | Professional & scientific | 2014 |
| Kanelsnurren AS | Manufacturing | 2007 |
| Kanospesialisten Da | Wholesale & retail | 2009 |
| Kape Finans AS | Professional & scientific | 2017 |
| Kapital Regnskap AS | Professional & scientific | 2013 |
| Karamba AS | Wholesale & retail | 2018 |
| Karateshop AS | Wholesale & retail | 2022 |
| Karin Hølland AS | Health & social care | 2007 |
| Karl Flislegger AS | Construction | 2026 |
| Karl Flislegger Holding AS | | 2025 |
| Karly Konsulenttjenester AS | Professional & scientific | 2020 |
| Karoline Invest AS | | 2025 |
| Karten AS | Financial services | 2005 |
| Kas Finans AS | | 2025 |
| Kasiv Holding AS | Financial services | 2017 |
| Katarzyna Service AS | Administrative & support | 2023 |
| Kathrine Knutsen Holding AS | | 2024 |
| Kato Da | Agriculture & fishing | 2023 |
| Katora Eiendom AS | Real estate | 2012 |
| Kattamyre Hellvik AS | Construction | 2013 |
| Kavod AS | Administrative & support | 2025 |
| KBJ Holding AS | | 2012 |
| Ke Eiendom AS | Real estate | 2021 |
| Kebro Eiendom AS | Real estate | 2025 |
| Kebro Holding AS | Real estate | 2025 |
| Keddy Norge AS | Wholesale & retail | 2022 |
| Keh Capital AS | | 2026 |