| Idt Solutions AS | Manufacturing | 2008 |
| Idt Sports AS | Professional & scientific | 2026 |
| Industrivegen 35 AS | Real estate | 2019 |
| Industrivegen Utvikling AS | Real estate | 2025 |
| Innlandet Dyretransport AS | Transport & logistics | 2021 |
| Innlandet Eiendom Og Utleie AS | Real estate | 2014 |
| Innlandet Grønt AS | Wholesale & retail | 2017 |
| Innlandet Service & Maskindrift AS | Agriculture & fishing | 2023 |
| Innlandet Trefiberisolering AS | Construction | 2025 |
| Inveks AS | Financial services | 2005 |
| Irva Invest AS | Professional & scientific | 2014 |
| J Aas Invest AS | Real estate | 2019 |
| J.Ø. Skjølås Holding AS | | 2025 |
| J.Ø. Skjølås Kran & Transport AS | Transport & logistics | 2025 |
| J15 Eiendom AS | Real estate | 1981 |
| Jal Invest AS | Financial services | 2003 |
| Jenzen AS | Information & communication | 2022 |
| JKF Invest AS | Financial services | 2005 |
| Jpac AS | Real estate | 2005 |
| JSM Shipping LLC | Transport & logistics | 2008 |
| K Olsby Eiendom AS | Transport & logistics | 2012 |
| K Olsby Transport AS | Transport & logistics | 1988 |
| K.G Utvikling AS | Real estate | 2025 |
| Kasper AS | Real estate | 2000 |
| Kjell Nordhagen AS | Construction | 1987 |
| Kjelstad Bakeri AS | Manufacturing | 1986 |
| Kloppen Eiendom AS | Real estate | 1982 |
| Kloppen Lamelltre AS | Manufacturing | 1989 |
| Kloppen Trevare AS | Manufacturing | 2001 |
| Klundby AS | Professional & scientific | 1981 |
| Kløverhusene AS | Real estate | 2008 |
| Koll Hansen Harald & Sønn Ans | Construction | 1980 |
| Koll-Hansen Da | Construction | 2013 |
| Kraby Eiendom AS | Real estate | 2018 |
| Kraby Ekspress AS | Transport & logistics | 2023 |
| Kraby Vedlikehold AS | Wholesale & retail | 2019 |
| Krabysanden Ans | Agriculture & fishing | 2025 |
| Krabyskogen Storbilsenter AS | Other services | 2000 |
| Kreativ Holding AS | Real estate | 2016 |
| Kveldsro Eiendom AS | Real estate | 1977 |
| Kvikstad AS | Hospitality | 2019 |
| KVT AS | Professional & scientific | 2022 |
| Kårsmia AS | Wholesale & retail | 1998 |
| Laban Media AS | Arts & recreation | 2024 |
| Laeskogen AS | Other services | 2004 |
| Lailas Hjørne AS | Wholesale & retail | 2011 |
| Lamelltre Holding AS | Manufacturing | 1992 |
| Leirdal Maskindrift AS | Construction | 2015 |
| Lena Autoservice AS | Other services | 1997 |
| Lena Bil & Bensin Ans | Real estate | 1975 |
| Lena Bil Og Bensin AS | Wholesale & retail | 2004 |
| Lena Bil Og Bensin Invest AS | Wholesale & retail | 1999 |
| Lena Bilomsetning Da | Wholesale & retail | 2009 |
| Lena Bygg AS | Construction | 2012 |
| Lena Eiendomsdrift AS | Real estate | 2014 |
| Lena Fjernvarme AS | Energy | 2005 |
| Lena Fot & Helse AS | Health & social care | 2025 |
| Lena Fus Barnehage AS | Education | 2019 |
| Lena Helsekompani AS | Health & social care | 2023 |
| Lena Legesenter Da | Health & social care | 2026 |
| Lena Produkter AS | Health & social care | 2020 |
| Lena Pub & Cafebar Da | Hospitality | 2002 |
| Lena Slipeservice AS | Manufacturing | 1986 |
| Lena Tannhelsesenter AS | Health & social care | 2008 |
| Lenagata 58 AS | Real estate | 2023 |
| Lenaheim Eiendom AS | Real estate | 2018 |
| Lene Selmer AS | Professional & scientific | 2011 |
| Lensbygda Og Skreiens Grunneierlag SA | Real estate | 1960 |
| Leon Invest AS | | 2005 |
| Lepro Gruppen AS | Health & social care | 1993 |
| Lepro Kommunal AS | Health & social care | 2020 |
| Lepro Utvikling AS | Education | 2020 |
| Lervold Auksjonsforretning AS | Wholesale & retail | 1993 |
| Lervold Utleie AS | Administrative & support | 2012 |
| Likra Eiendom AS | Real estate | 1985 |
| Lillo Invest AS | Financial services | 2017 |
| Limo Eiendom AS | Real estate | 2000 |
| Limo Holding AS | Manufacturing | 2005 |
| Linnerud Drift AS | Professional & scientific | 2019 |
| Lissto Invest AS | | 2018 |
| Lund & Lund Transport AS | Transport & logistics | 2020 |
| Lystad Media Og Invest AS | Arts & recreation | 2008 |
| Løkken Kjøtt Og Dagligvare AS | Wholesale & retail | 1991 |
| Majersveen AS | | 2024 |
| Marstein Veterinærpraksis AS | Professional & scientific | 2024 |
| Martinsen Invest AS | Real estate | 2007 |
| Mat Fra Toten SA | Professional & scientific | 2008 |
| Midtskillen Ans | Other services | 1996 |
| Miks Invest AS | | 2005 |
| Mjøspanel Kraby AS | Manufacturing | 2015 |
| Mjøsradon AS | Construction | 2026 |
| Mjøsvegen 381 AS | Real estate | 2022 |
| Mohas AS | Real estate | 2007 |
| Mohn Eiendom AS | Real estate | 2020 |
| Mojo Invest AS | Real estate | 2007 |
| MVL Media AS | Information & communication | 1998 |
| Myhren Prosjekter AS | Construction | 2017 |
| Mårsmia AS | | 2025 |
| Nina-Invest AS | | 2021 |
| No Gudbrandsen AS | Real estate | 2005 |