| J. Lothe Maskin AS | Construction | 2019 |
| Jabnå Så Dræge AS | Arts & recreation | 2026 |
| Jakema AS | Real estate | 2011 |
| Jakobsen-Byggservice-As | Construction | 2021 |
| JB System AS | Professional & scientific | 2004 |
| JBM Eiendom AS | Real estate | 2024 |
| JBM Invest AS | Manufacturing | 2012 |
| JBM Products AS | Manufacturing | 2007 |
| JHN Eiendom AS | Real estate | 2007 |
| Jip Eiendom AS | Real estate | 2024 |
| Jip Holding AS | Health & social care | 2021 |
| JK Struktur Installasjon AS | Construction | 2024 |
| JNB Holding AS | Manufacturing | 2005 |
| Jofark AS | Professional & scientific | 2024 |
| Jogu Holding AS | | 2024 |
| Jons Minde Eiendom AS | Real estate | 2013 |
| Jostein Lothe Holding AS | | 2024 |
| JS Distribusjon AS | Transport & logistics | 2017 |
| JST Holding AS | Construction | 2005 |
| Jædergården AS | Real estate | 2014 |
| Jær-Tegning AS | Professional & scientific | 2006 |
| Jæren Express & Bud AS | Transport & logistics | 2025 |
| Jæren Industripartner AS | Health & social care | 1990 |
| Jæren Makerspace AS | Professional & scientific | 2025 |
| Jæren Rekneskapslag SA | Professional & scientific | 1955 |
| Jæren Sportmed AS | Other services | 1997 |
| Jærgrønt AS | | 2026 |
| Jærkrydder AS | Manufacturing | 2021 |
| Jærmalt AS | Agriculture & fishing | 2026 |
| Jærtakst AS | Professional & scientific | 2011 |
| Jøers Kjøkken AS | Hospitality | 2017 |
| Jøntvedt AS | | 2026 |
| K.M.V. Holding AS | Manufacturing | 2005 |
| Kalberg Holding AS | Real estate | 2021 |
| Kalberg NK1 AS | Real estate | 2021 |
| Kalberg NK3 AS | Real estate | 2021 |
| Kanalhuset AS | Real estate | 2021 |
| Ke Automasjon AS | Construction | 2014 |
| Kido Holding AS | Financial services | 2013 |
| Kimi Holding AS | | 2022 |
| Kimi Service AS | Transport & logistics | 2015 |
| Kjeldsberg Ring AS | Real estate | 2016 |
| Kjellebakken Samdrift Da | Agriculture & fishing | 2008 |
| Klepp Datahjelp Ans | Manufacturing | 1998 |
| Klepp Service Drift AS | Construction | 2015 |
| Klingsheim AS | Construction | 2004 |
| Klingsheim Auto AS | Wholesale & retail | 2019 |
| Klingsheim Mek AS | Manufacturing | 2005 |
| Kriskofysio AS | Health & social care | 2024 |
| Kutterveien 2 Boligutvikling AS | Real estate | 2026 |
| Kvassåsen AS | Real estate | 2017 |
| Kverme Rør AS | Construction | 2013 |
| Kverneland AS | Manufacturing | 1894 |
| Kverneland Bolig AS | Real estate | 2018 |
| Kverneland Elektriske Gruppen AS | Construction | 1983 |
| Kverneland Energi AS | Wholesale & retail | 2017 |
| Kverneland Energy International AS | Professional & scientific | 2021 |
| Kverneland Group Operations Norway AS | Manufacturing | 1988 |
| Kverneland Næringspark AS | Real estate | 2007 |
| Kverneland Næringspark II AS | Real estate | 2008 |
| Kverneland Næringspark Ix-A AS | Real estate | 2018 |
| Kverneland Næringspark V AS | Real estate | 2008 |
| Kverneland Næringspark X AS | Real estate | 2008 |
| Kverneland Næringspark Xi AS | Real estate | 2008 |
| Kverneland Næringspark Xii AS | Real estate | 2008 |
| Kvernelandsveien 36 AS | Real estate | 2024 |
| Kvernevikveien Invest AS | | 2015 |
| Kvernland Group Metz SAS | Wholesale & retail | 2007 |
| Kvålkroken 14 AS | Real estate | 2024 |
| Laila Lothe Holding AS | | 2024 |
| Lalandsvegen 227 AS | Real estate | 2024 |
| Langhus AS | Real estate | 2021 |
| Lapwing Engineering AS | Professional & scientific | 2018 |
| Lars P. Dahle Maskin AS | Construction | 2007 |
| Lashes by Cassie AS | Other services | 2022 |
| Lateral AS | Professional & scientific | 2000 |
| Lawtech Inc Ltd Nuf | Professional & scientific | 2024 |
| Leif Lende AS | Construction | 1997 |
| Leikvoll's Kjerneboring AS | Construction | 1996 |
| Lie Blikk AS | Construction | 2005 |
| Lie CNC AS | Manufacturing | 2020 |
| Lie Design AS | Professional & scientific | 2021 |
| Lie Glass AS | Construction | 2020 |
| Lie Gruppen AS | Construction | 2021 |
| Logistikksentralen AS | Transport & logistics | 2018 |
| Lokstallen Eiendom AS | Real estate | 2016 |
| Lola & Anette Industrier Ans | Real estate | 2001 |
| Lothe Eiendom AS | Real estate | 2008 |
| Lothe S J Holding AS | Real estate | 2018 |
| Lothe SJ Toppholding AS | Real estate | 2018 |
| Lotos Nordica AS | Transport & logistics | 2018 |
| Lumico AS | Wholesale & retail | 2019 |
| Lydkilden.No Da | Arts & recreation | 2009 |
| Lynet Holding AS | | 2024 |
| Madla Revheim Utbygging AS | Real estate | 1969 |
| Madla Vest 1 AS | Real estate | 2019 |
| Madla Vest 8 AS | Real estate | 2019 |
| Madla Vest AS | Real estate | 2015 |
| Magic Machining Services Limited Nuf | Professional & scientific | 2024 |
| Magne Orstad Investering AS | Financial services | 2005 |