| Harsem Ide & Design Ans | | 1997 |
| Havbris Klinikk AS | Health & social care | 2023 |
| HC Fossum AS | Wholesale & retail | 2014 |
| Head Eiendom AS | Real estate | 1980 |
| Head Norge AS | Wholesale & retail | 1988 |
| Headmed AS | Health & social care | 2021 |
| Hebbe Lilles Da | Wholesale & retail | 2022 |
| Hentorik Eiendom AS | Real estate | 2012 |
| Hesleberg Gartneri Ans | Agriculture & fishing | 1982 |
| Hesleberg Gartneri AS | Wholesale & retail | 2021 |
| Hesø Holding AS | | 2025 |
| Hex Holding AS | Wholesale & retail | 2005 |
| High Hill Bits AS | Information & communication | 2024 |
| High Tide AS | | 2019 |
| High Tower AS | | 2024 |
| Holdingpartner AS | Administrative & support | 2005 |
| Holmen Holding AS | Wholesale & retail | 1988 |
| Humlebo AS | Financial services | 2005 |
| Husmakeriet AS | Wholesale & retail | 2012 |
| Hybris Holding AS | | 2020 |
| Høsting AS | | 2021 |
| I Sustain AS | Professional & scientific | 2012 |
| Ida Norlie AS | Wholesale & retail | 2020 |
| Imea Nuf | Information & communication | 2012 |
| Immer Holding AS | | 2022 |
| Ingvoldstad Forretningsutvikling & Interim Ledelse AS | Professional & scientific | 2015 |
| Intact Company AS | Wholesale & retail | 2010 |
| Integritas Holding AS | Health & social care | 2026 |
| IP Vetinvest AS | | 2005 |
| Ipa Holding AS | | 2017 |
| Iprolinks Da | Information & communication | 2004 |
| Iriz Holding AS | Information & communication | 2020 |
| Istre Teknologi AS | Information & communication | 2024 |
| J E Johannessen AS | Professional & scientific | 2008 |
| Jamlab AS | Information & communication | 2018 |
| Jazzhands AS | Arts & recreation | 2003 |
| Jazzy AS | Financial services | 2008 |
| Jeanslab AS | Wholesale & retail | 1990 |
| Jerndahl Holding AS | | 2020 |
| JHS Eiendom AS | Real estate | 2006 |
| JOB2DO Tec AS | Wholesale & retail | 2016 |
| Jon Robertsen Holding AS | Financial services | 2005 |
| Jonas Lauritzsen Holding AS | | 2024 |
| Jos Invest AS | | 2023 |
| Jufrise Holding AS | Health & social care | 1996 |
| Jujo AS | Real estate | 2024 |
| JV Partner Holding AS | | 2023 |
| K&K Holding AS | Real estate | 2018 |
| Karriereakademiet AS | Education | 2020 |
| Kennel Kystflokken Nuf | Agriculture & fishing | 2022 |
| Ker Pluss AS | Administrative & support | 2026 |
| Keri Invest AS | | 2026 |
| KGB Invest AS | Professional & scientific | 2024 |
| Kiramax Holding AS | Real estate | 2006 |
| Kjo Holding AS | Real estate | 2016 |
| Kjøvangen Va SA | Water & waste | 2010 |
| Knekk AS | Professional & scientific | 2010 |
| Knusla AS | Health & social care | 2007 |
| Knusla Jakt Og Fritid AS | Professional & scientific | 2010 |
| Kristoffer Aarak Holding AS | | 2026 |
| Krosty AS | Administrative & support | 1991 |
| KSB Invest AS | | 2020 |
| Kåpa I Og II AS | Real estate | 2021 |
| Lars Hillesgate 14-16 AS | Real estate | 1999 |
| Lei Lett AS | Administrative & support | 2026 |
| Leith Corporate Education AS | Professional & scientific | 2019 |
| Leiv Engelschiøn AS | Professional & scientific | 1927 |
| Lenani AS | Real estate | 2010 |
| Little England Design AS | Wholesale & retail | 1989 |
| LK Utvikling AS | Health & social care | 2020 |
| Lu Consult AS | Professional & scientific | 2013 |
| Lucerne Norway AS | | 2025 |
| Luch Energy AS | Professional & scientific | 2020 |
| Luen AS | Real estate | 2007 |
| Lugo AS | Real estate | 2000 |
| Lulo Invest AS | Financial services | 2018 |
| Lund Marine and Renewables AS | Professional & scientific | 2017 |
| LW Studio AS | Other services | 2009 |
| Lwsl Holding AS | | 2015 |
| Lyngør Båt/Eiendom Formidling AS | Wholesale & retail | 2026 |
| Låsservice Trond Andersen AS | Construction | 2017 |
| Lørn AS | Professional & scientific | 2018 |
| Maling & Mer Da | Construction | 2024 |
| Margareth Sandnes Holding AS | Health & social care | 2024 |
| Mariero AS | Real estate | 2006 |
| Martinsen Safe AS | Health & social care | 2019 |
| Maudbukta Legekontor AS | Health & social care | 2013 |
| Max Eiendom AS | Real estate | 1997 |
| MBC Holding AS | Financial services | 2008 |
| Mechemer AS | | 2026 |
| Medisinteknikk AS | Manufacturing | 2024 |
| Mel Asker 19 AS | Real estate | 2024 |
| Mel Asker 8 AS | Real estate | 2024 |
| Meo Holding AS | Information & communication | 2022 |
| Mestab Holding AS | | 2021 |
| Mevassvik Invest AS | Real estate | 2015 |
| Miljø Consult AS | Professional & scientific | 1995 |
| Millmaker Consulting AS | Professional & scientific | 2025 |
| Mission Brands AS | Wholesale & retail | 1993 |
| Miv Invest AS | | 2006 |