| Hellum Diamant AS | Wholesale & retail | 2019 |
| Helselise AS | Information & communication | 2023 |
| Helso Norge AS | Wholesale & retail | 2020 |
| Hem & Partner AS | Professional & scientific | 2008 |
| Hemijo Invest AS | | 2025 |
| Henriette Carlsen AS | | 2023 |
| Hessen Consulting AS | Information & communication | 2019 |
| Hessen Invest AS | Information & communication | 2019 |
| Hibe Consulting AS | Professional & scientific | 2025 |
| Hjertetreet AS | Administrative & support | 2014 |
| HK Holding Tønsberg AS | Manufacturing | 2005 |
| Hofferdahl Invest AS | Wholesale & retail | 2020 |
| Holstad Service AS | Administrative & support | 2018 |
| Houseofsplend AS | Wholesale & retail | 2014 |
| HP Bygg Og Montasje AS | Construction | 2015 |
| HSG Eiendom AS | Real estate | 2014 |
| HSG Holding AS | Real estate | 2014 |
| Huv 27 AS | Real estate | 2022 |
| Hyge Invest AS | Financial services | 2018 |
| Hyrex AS | Professional & scientific | 2020 |
| Hyttepils AS | Manufacturing | 2022 |
| Håkon Gamles Gate 9 AS | Real estate | 2019 |
| Håkon Gamlesgate 3 AS | Real estate | 2018 |
| Håndverk Og Eiendomstjenester AS | Construction | 2025 |
| Høgmo Holding AS | | 2026 |
| Høie Holding AS | Real estate | 2005 |
| Høienholm Holding AS | Real estate | 2019 |
| In Circle AS | Professional & scientific | 2005 |
| Inn Taxi AS | Transport & logistics | 2026 |
| Innafor AS | | 2026 |
| Inter-Team Ans | Wholesale & retail | 1985 |
| Isabian Holding AS | | 2025 |
| Isblå AS | Wholesale & retail | 2016 |
| IT Moves AS | Wholesale & retail | 2018 |
| Italian Food Market AS | Manufacturing | 2022 |
| Ivago AS | Wholesale & retail | 2022 |
| J&M Holding AS | | 2026 |
| Jan-Roger Birkelund AS | Construction | 2008 |
| Javy AS | Professional & scientific | 2021 |
| Jekra Holding AS | Transport & logistics | 2005 |
| Jeno Holding AS | Financial services | 2015 |
| Jernbanealleen 30 Sandefjord AS | Real estate | 2005 |
| JHW Holding AS | | 2025 |
| Jobro Holding AS | | 2025 |
| Jodav Holding AS | | 2023 |
| Jojo AS | Professional & scientific | 1998 |
| Jonstang Invest AS | | 2022 |
| Joys Wigart AS | Professional & scientific | 2016 |
| JS Beauty AS | Other services | 2025 |
| Julle Holding AS | | 2023 |
| Juviking AS | Administrative & support | 1996 |
| K-Soft (Northern) Ltd | Information & communication | 2016 |
| K. Petterson Holding AS | Real estate | 2019 |
| Kaase Holding AS | | 2021 |
| Kaffe & No AS | Hospitality | 2011 |
| Kalager Holding AS | | 2025 |
| Kanalveien 1-3 AS | Real estate | 2005 |
| Kanic Invest AS | Financial services | 2018 |
| Kari Nyhus AS | Education | 2022 |
| Karol & Rafal Bygg AS | Construction | 2025 |
| Karyatide Invest AS | Wholesale & retail | 2004 |
| Kcla Holding AS | | 2024 |
| Kess Holding AS | Real estate | 2014 |
| Kiesler Hårdesign Tolvsrød AS | Other services | 2008 |
| Kilen Catering AS | Hospitality | 2018 |
| Kimberly Holding AS | | 2024 |
| Kinber AS | | 2021 |
| Kip Kruse AS | Professional & scientific | 2018 |
| Kiva Vekst AS | Real estate | 2012 |
| KK Malerservice AS | Real estate | 2022 |
| Klats AS | Health & social care | 2018 |
| Klinikk Økostjerna AS | Health & social care | 2024 |
| Klopp Arkitektur AS | Professional & scientific | 2026 |
| Klopp Båthavn SA | Transport & logistics | 1957 |
| Kloster Studio AS | Information & communication | 2015 |
| Knut Røer Eiendom AS | Professional & scientific | 2003 |
| Kolonne AS | Information & communication | 2025 |
| Kongegata 17 Larvik AS | Real estate | 1998 |
| Kongens Gate 5 Sandefjord AS | Real estate | 2012 |
| Konow AS | | 2025 |
| Kraken Kapital AS | | 2026 |
| Kreken Eiendom AS | Real estate | 2006 |
| Kreken Holding AS | Real estate | 2008 |
| Krispy AS | Wholesale & retail | 2021 |
| Kuldeutleie AS | Wholesale & retail | 2014 |
| Kvalnes Eiendom AS | Manufacturing | 2004 |
| Kvitare AS | Wholesale & retail | 2024 |
| Kvålseth Eiendomsutvikling AS | Real estate | 2006 |
| Kåre Løvdal Eiendom AS | Real estate | 2018 |
| L. Svartdal Invest AS | Real estate | 2018 |
| Lagelab AS | Information & communication | 2023 |
| Landromantikk Nuf | Wholesale & retail | 2007 |
| Langsrud AS | | 2026 |
| Larizadeh Holding AS | Health & social care | 2021 |
| Larsen Bygg Og Betong AS | Construction | 2025 |
| Larsens Byggservice AS | Construction | 2000 |
| Laser Tech Holding AS | Administrative & support | 2001 |
| Le Bygg Og Montasje AS | Construction | 2022 |
| Lege Andre Blaauw AS | Health & social care | 2023 |
| Lege Tobias Pihl AS | Health & social care | 2020 |