| Happy Horses AS | Agriculture & fishing | 2007 |
| Havi Logistics AS | Wholesale & retail | 1986 |
| Hawkvalley Invest AS | | 2017 |
| Heggard AS | | 2018 |
| Heidi Kotmark Holding AS | Real estate | 2005 |
| Heidi Og Monas Snekkeri Ans | Manufacturing | 1988 |
| Helsesupport AS | Health & social care | 2023 |
| Hesselberg AS | Wholesale & retail | 2001 |
| Hesselberg Eiendom AS | Real estate | 2018 |
| Hesselberg Eiendom Moss AS | Real estate | 2013 |
| Hesselberg SN AS | Wholesale & retail | 1994 |
| Hey Di AS | Manufacturing | 1997 |
| Hey Du AS | Professional & scientific | 2002 |
| HG Prosjekt AS | | 2023 |
| Hilverda De Boer Norge AS | Agriculture & fishing | 2017 |
| Hiso AS | Manufacturing | 2019 |
| Holst Kommunikasjon AS | Professional & scientific | 2024 |
| Holter VVS AS | Construction | 2014 |
| Hoppensprett Frogner AS | Education | 2022 |
| Hospital Trading AS | Wholesale & retail | 1992 |
| Hovi Invest AS | | 2022 |
| Hovind Invest AS | Financial services | 2005 |
| Huldre Invest AS | | 2022 |
| Hundemana AS | Other services | 2020 |
| Hydroscand AS | Wholesale & retail | 1978 |
| Hydroscand Eiendom AS | Real estate | 1990 |
| Hytjan & Vardøy AS | Construction | 2016 |
| Håkon Berger Holding AS | | 2020 |
| Høyem Integrasjon AS | Professional & scientific | 2015 |
| Ikess Norge AS | Professional & scientific | 2015 |
| Indus Norge | Administrative & support | 2015 |
| Indus Norge AS | Administrative & support | 1983 |
| Investi AS | | 2006 |
| Iqplus AS | Information & communication | 2017 |
| Irm Norge AS | Wholesale & retail | 1989 |
| J.Bertelsen Consulting AS | Professional & scientific | 2026 |
| J.Bertelsen Holding AS | | 2026 |
| Ja VVS AS | Construction | 2021 |
| Jag Services AS | Administrative & support | 2015 |
| Jaren Sentrum Utvikling AS | Real estate | 2014 |
| JB Montering AS | Construction | 2023 |
| Jba Renhold Og Bygg AS | Administrative & support | 2019 |
| Jeksla AS | | 2019 |
| Jenny Jensen AS | | 2024 |
| JJ Bygg Da | Construction | 2012 |
| JM Gruppe AS | Hospitality | 2020 |
| Joda Intertrade AS | Wholesale & retail | 2019 |
| Josa AS | Professional & scientific | 2025 |
| Joselin Invest AS | Real estate | 2023 |
| JSM Group AS | Professional & scientific | 2023 |
| JW Asset AS | Professional & scientific | 2024 |
| Kamphus AS | Administrative & support | 2014 |
| Kamy Holding AS | Professional & scientific | 2017 |
| Kangen AS | Financial services | 2016 |
| Karoline Eggens Vei 8 AS | Real estate | 2013 |
| Kenneth Motocross AS | Arts & recreation | 2001 |
| Kerama Bygg AS | Construction | 2024 |
| KFH Invest AS | Real estate | 2022 |
| Kildal Entertainment AS | Arts & recreation | 2026 |
| Kim Ove AS | | 2020 |
| Kingsmoor Petfood Norge AS | Wholesale & retail | 2016 |
| KM Johansen Holding AS | | 2023 |
| Knappen Holding AS | | 2026 |
| Kolseth Invest AS | Real estate | 2007 |
| Kominox AS | Wholesale & retail | 2008 |
| Kontour AS | Transport & logistics | 2024 |
| Kramp AS | Wholesale & retail | 1978 |
| Kranentreprenøren AS | Construction | 2009 |
| Kreofab AS | Professional & scientific | 2023 |
| Krutt Invest AS | Real estate | 2023 |
| Krydder AS | Wholesale & retail | 2008 |
| Kvalen Invest AS | Financial services | 2014 |
| Kvalisport AS | Professional & scientific | 2025 |
| Kvamme Holding AS | Professional & scientific | 2020 |
| Kyndia AS | Information & communication | 2003 |
| Kærsgaard Holding AS | Real estate | 2019 |
| Langeland Lab Service AS | Manufacturing | 2018 |
| Lauten Eiendom AS | Real estate | 2000 |
| Lautens Snekkerverksted AS | Manufacturing | 1982 |
| Le Sommelier AS | Education | 2006 |
| Leieprat AS | Information & communication | 2026 |
| Leif H Strøm AS | Wholesale & retail | 2023 |
| Leif H Strøm Holding AS | Wholesale & retail | 2023 |
| Leirud Vannverk A/L | Water & waste | 1995 |
| Lena Maskin AS | Wholesale & retail | 1976 |
| Lets Eat Kitchen AS | Hospitality | 2021 |
| LGT AS | Construction | 2018 |
| Liamyrane AS | Real estate | 2025 |
| Licina Holding AS | Information & communication | 2019 |
| Lillestrøm Service AS | Education | 2025 |
| Lindeberg Dagligvarer Ans | Wholesale & retail | 1994 |
| Lindeberg Eiendom AS | Real estate | 1987 |
| Lindeberg Eiendom BHG AS | Education | 2006 |
| Lindeberg Fus Barnehage AS | Education | 2018 |
| Lindebergveien 14-16 AS | Real estate | 2017 |
| Linn Sitt AS | | 2025 |
| Lre Holding AS | | 2024 |
| LS Invest AS | Financial services | 2008 |
| Lunderåsen Antennelag SA | Information & communication | 1989 |
| Lunderåsen Fus Barnehage AS | Education | 2018 |