| Henriette Høyskel AS | Financial services | 2005 |
| Henriksberg Holding AS | Professional & scientific | 2023 |
| Herbrand Haraldseth AS | Financial services | 2017 |
| Hercules C49 AS | Real estate | 2023 |
| Hercules Utvikling AS | Real estate | 2005 |
| HHF Invest AS | Real estate | 2019 |
| Hjelm Invest AS | Health & social care | 2024 |
| Holding 100 AS | Real estate | 2020 |
| Hovde Prosjekt AS | Professional & scientific | 2020 |
| HS Stalheim Invest AS | | 2021 |
| Hushovd Utvikling AS | Real estate | 2007 |
| Hyggen Stenhuggeri AS | Mining & quarrying | 1957 |
| Hytteinvest Norge AS | Wholesale & retail | 2019 |
| I.Muri Ark AS | Professional & scientific | 2023 |
| Ibaro AS | Real estate | 2008 |
| Ie Invest AS | Real estate | 2008 |
| Ikober AS | Financial services | 2017 |
| Inc Forlag AS | Information & communication | 2020 |
| Indianna Invest AS | Real estate | 2005 |
| Industriforedling AS | Wholesale & retail | 1990 |
| Ineffable AS | Construction | 2020 |
| Infonautisk AS | | 2016 |
| Inger Hokstad AS | Information & communication | 2001 |
| Ingvarda AS | Real estate | 2006 |
| Inrs AS | Professional & scientific | 2025 |
| Inseto AS | Financial services | 2016 |
| Inside Out Consulting AS | Professional & scientific | 2019 |
| Inøst Invest AS | Information & communication | 2021 |
| J.P.G Invest AS | Administrative & support | 2024 |
| Jacan AS | | 2005 |
| Jaf Finans AS | | 2020 |
| Jahold AS | Real estate | 2006 |
| Jardar Holding AS | Real estate | 2016 |
| Jefeff Invest AS | Real estate | 2021 |
| Jenny Holding AS | Wholesale & retail | 2002 |
| Jens Philip AS | Financial services | 2005 |
| Jevi AS | Administrative & support | 1998 |
| JF Projects AS | Transport & logistics | 2023 |
| Jfa Invest AS | | 2020 |
| JGB Corporate AS | Real estate | 1994 |
| Jiek Capital AS | | 2026 |
| JKB Invest AS | Financial services | 2016 |
| JMT Vedlikehold AS | Construction | 2021 |
| Jobi AS | | 2021 |
| Jupe Invest AS | Financial services | 2021 |
| Jusila AS | Professional & scientific | 2005 |
| K. Bruland AS | | 2021 |
| K4 Utvikling AS | Real estate | 2024 |
| Kanute AS | | 2020 |
| Karat Vin AS | Wholesale & retail | 2022 |
| Karpus AS | Real estate | 2005 |
| Kathrine Stang AS | Professional & scientific | 2025 |
| Keckmann Holding AS | Real estate | 2015 |
| Keh Design AS | Professional & scientific | 2021 |
| KGS 069 Holding AS | | 2023 |
| Khamsin AS | Real estate | 2010 |
| Kibra AS | Education | 2020 |
| Kidsas 2 AS | | 2022 |
| Kidsas 3 AS | | 2022 |
| Kidsas AS | | 2010 |
| Kielland Industrier AS | | 2024 |
| Kikka AS | | 2025 |
| Kilen AS | Real estate | 1999 |
| Kimrag AS | Financial services | 2016 |
| Kinge Holding AS | Financial services | 2015 |
| Kingos Gate 4 AS | Real estate | 2023 |
| Kire Holding AS | | 2018 |
| Kjerringvik Eiendom AS | Real estate | 2015 |
| KJR Holding AS | | 2026 |
| Kjus Holding AS | Real estate | 1993 |
| Kka Invest AS | Real estate | 2020 |
| Klausbo AS | Wholesale & retail | 2014 |
| KM Holding AS | Real estate | 2005 |
| Koff Holding AS | Financial services | 2010 |
| Konect DCS Ltd Nuf | Wholesale & retail | 2025 |
| Kongshavn 1 AS | Financial services | 2017 |
| KRC Invest AS | Real estate | 2004 |
| Krister Aanesen AS | Financial services | 2008 |
| Krog DNM AS | Professional & scientific | 2012 |
| Krugz AS | Real estate | 2019 |
| Krytec AS | | 2024 |
| KT Trading AS | Professional & scientific | 2019 |
| Kudu Capital AS | | 2024 |
| Kuldeteknikk Holding AS | Real estate | 1974 |
| Kuling AS | Professional & scientific | 2021 |
| Kulpen AS | Real estate | 2018 |
| KV Consulting AS | Professional & scientific | 2015 |
| Kvinnesiden AS | Professional & scientific | 2005 |
| Kvitfjell Vest AS | Real estate | 2004 |
| Kvitfjelltoppen AS | Real estate | 2005 |
| L Grønnerød AS | Real estate | 1976 |
| La Vandre AS | Information & communication | 2022 |
| Labu Invest AS | Financial services | 2009 |
| Lampeland Tomteselskap AS | Real estate | 2019 |
| Langodd AS | Real estate | 2021 |
| Langodden AS | Financial services | 2005 |
| Las Dillas AS | Financial services | 2007 |
| Lassonsgate 2 AS | Real estate | 2020 |
| Laug AS | Real estate | 2004 |
| Leat AS | Real estate | 2020 |