| Henning Blindheim Invest AS | Administrative & support | 2003 |
| Henrik Stenrød Holding AS | | 2025 |
| Herbergveien 2 AS | Real estate | 2018 |
| Hermani Klær AS | Wholesale & retail | 2022 |
| Hersleth & Witnes AS | Real estate | 2024 |
| Hib Holding AS | Real estate | 2022 |
| Hightech Integration AS | Information & communication | 2026 |
| Hio AS | Real estate | 2003 |
| Hisings Merchant Service KS | Manufacturing | 1999 |
| Hjørgunn Barnehage AS | Education | 2022 |
| Hm-Invest AS | Financial services | 2018 |
| Hobby & Sånt AS | Wholesale & retail | 2008 |
| Holmskau & Partners AS | Real estate | 2022 |
| Hotell 1016 Olav Digre AS | Hospitality | 2018 |
| Hovden Gård Ans | Agriculture & fishing | 2020 |
| Hovseter Barnehage AS | Education | 2020 |
| Hovskogen Atrium AS | Real estate | 2021 |
| HP Prosjektering AS | Transport & logistics | 2015 |
| Hubo Eiendom AS | Real estate | 2017 |
| Hundskinnveien 100 Eiendom AS | Real estate | 2003 |
| Hundskinnveien 95 AS | Real estate | 2009 |
| Husar Transport AS | Transport & logistics | 2026 |
| Huth & Wien Eiendom AS | Real estate | 2007 |
| Huth & Wien Invest AS | Wholesale & retail | 2005 |
| Hvitmell KS | Wholesale & retail | 2009 |
| Hwa Holding AS | Real estate | 2016 |
| Hydrofoil Holding AS | | 2019 |
| Hytteselskapet Ulaheim Ba | Real estate | 1921 |
| Håvar Ådalen Holding AS | Real estate | 2016 |
| Høgliveien Næring AS | Real estate | 2022 |
| Høisand AS | Hospitality | 2025 |
| Høydaveien 7 AS | Real estate | 2012 |
| Høyden Osteopatiklinikk AS | Health & social care | 2017 |
| Høyesterettsadvokat Thorer Ytterbøl AS | Professional & scientific | 1991 |
| Ihsan Eiendom AS | Real estate | 2024 |
| Ika Estates AS | Real estate | 2020 |
| Il Casolare AS | Hospitality | 2017 |
| Il Casolare Drift AS | Hospitality | 2022 |
| Impuls Media AS | Professional & scientific | 2020 |
| Indian Spice AS | Hospitality | 2020 |
| Indrevær AS | Health & social care | 2021 |
| Industri & Eiendomservice AS | Manufacturing | 2018 |
| Industrirør & Gass AS | Construction | 2020 |
| Industrirør & Gass AS | Construction | 2025 |
| Industriservice Eiendom AS | Real estate | 2000 |
| Infini AS | Wholesale & retail | 1990 |
| Infografikk AS | Wholesale & retail | 1989 |
| Ing. Pål-H Degnes AS | Real estate | 2021 |
| Ingard Langsholdt AS | Construction | 1982 |
| Ingeniørfirma Stephensen AS | Professional & scientific | 2022 |
| Inmotion Living AS | Education | 2025 |
| Innovation and Technology Management AS | Information & communication | 2010 |
| Inter Group Holding AS | Wholesale & retail | 2021 |
| Interbuss AS | Transport & logistics | 2020 |
| Interfreight AS | Transport & logistics | 2006 |
| Intersolution AS | Information & communication | 2016 |
| Investhellinga AS | Financial services | 2012 |
| Iron Link Trading AS | | 2025 |
| Iryna Wang AS | Health & social care | 2013 |
| Isador AS | Construction | 2018 |
| Isarpsborg AS | Administrative & support | 2001 |
| Isnes Holding AS | | 2020 |
| Isnesveien 35 AS | Real estate | 2011 |
| It-Sentralen AS | Information & communication | 2022 |
| It-Service Thomas Ihlebæk AS | Information & communication | 2012 |
| Itbaktuelt AS | Arts & recreation | 2017 |
| J.A.M. Holding AS | Real estate | 2015 |
| Ja Entreprenøren AS | Real estate | 2024 |
| Jacek Szarycki - Usl Budowlane | Construction | 2006 |
| Jacobsen Holding 2026 AS | | 2026 |
| Jahema AS | Real estate | 2013 |
| Jahema Maskin AS | Administrative & support | 2024 |
| Jamilla Johansen AS | Arts & recreation | 2020 |
| Jan Holstad Trading AS | Wholesale & retail | 1961 |
| Jas BG58 AS | Real estate | 2023 |
| Jas Invest AS | Transport & logistics | 2005 |
| Jasarevic AS | | 2021 |
| JBJ Invest AS | | 2024 |
| JC Haglund AS | Professional & scientific | 2020 |
| Jconsept AS | Professional & scientific | 2025 |
| Jenseg Bakeri Og Konditori AS | Manufacturing | 2021 |
| Jenseg Eiendom AS | Real estate | 2021 |
| Jernbanegaten 10 AS | Real estate | 2017 |
| Jernsmia Invest AS | | 2022 |
| Jerprusta AS | Professional & scientific | 2004 |
| Ji Tjenester AS | Transport & logistics | 2026 |
| Jiba AS | Wholesale & retail | 2021 |
| Jimmy Nordli Holding AS | | 2024 |
| JLT Holding AS | Financial services | 2013 |
| JMR Bygg AS | Construction | 2005 |
| JMR Invest AS | Construction | 2005 |
| Jochri AS | | 2023 |
| Jon Grasto Aaa AS | | 2024 |
| Jordbærpikene Borg AS | Hospitality | 2008 |
| Jovi Holding AS | Professional & scientific | 2021 |
| JR Box AS | Construction | 2008 |
| Jrewing Invest AS | | 2023 |
| JRJ Holding AS | Financial services | 2014 |
| JS Norge AS | Professional & scientific | 2000 |
| JSW Holding AS | Professional & scientific | 2023 |