| Defiberon AS | Construction | 2019 |
| Deleid Eiendom AS | Real estate | 2021 |
| Dewesoft AB Nuf | Professional & scientific | 2026 |
| Digitalis AS | Professional & scientific | 1996 |
| Din Dyrlege AS | Professional & scientific | 2013 |
| Dranges Takst Og Bygg AS | Professional & scientific | 2015 |
| Driftec AS | Construction | 2023 |
| Dyrskuveien 1930 AS | Real estate | 2022 |
| E.T.Distribusjon AS | Transport & logistics | 1996 |
| Ecoprod AS | Manufacturing | 2023 |
| Eivind Landsverk AS | Information & communication | 2021 |
| Ekeberg Barnehage AS | Education | 2023 |
| Ekeberg Sandforretning Ans | Mining & quarrying | 2001 |
| Elcotex AS | Professional & scientific | 2017 |
| Eliel Facility AS | Hospitality | 2021 |
| Elpack AS | Wholesale & retail | 1990 |
| Elvemo Mekk AS | Wholesale & retail | 2012 |
| Elvit Facility Services AS | Hospitality | 2025 |
| Epletunet Aktivitetsbarnehage AS | Education | 2002 |
| Era Eiendom Invest AS | Real estate | 2024 |
| Erlu Eiendom AS | Real estate | 2024 |
| Erlu Holding AS | Construction | 2023 |
| Esh-Holding AS | Construction | 2018 |
| Evimo AS | | 2025 |
| F&S Eiendom AS | Real estate | 2019 |
| F&S Holding AS | Construction | 2019 |
| Fasadefilm AS | Administrative & support | 2024 |
| Filipinjos AS | Professional & scientific | 2022 |
| Finn Schultz Holding AS | | 2005 |
| Finstadhagan 13 AS | Real estate | 2018 |
| Finstadhagan 25 AS | Real estate | 2013 |
| Finstadhagan Eiendom AS | Real estate | 2022 |
| Finstadhagen Holding AS | Other services | 2020 |
| Finstadhagen Last AS | Other services | 1999 |
| Finstadkrysset Eiendom AS | Real estate | 2008 |
| Fjordbyen Lierstranda Utvikling AS | Real estate | 2019 |
| Fjøset Restaurant AS | Hospitality | 2015 |
| Flid Holding AS | | 2025 |
| Flismester AS | Construction | 2026 |
| Foodman AS | Manufacturing | 1992 |
| Fossum Graveservice AS | Construction | 2014 |
| Fosswik Eiendom AS | Real estate | 2016 |
| Freire Vitality & Beauty AS | Other services | 2025 |
| Frigotek Storkjøkken AS | Wholesale & retail | 2020 |
| Frogner Prosjektutvikling AS | Real estate | 2012 |
| Futuretree Invest AS | | 2025 |
| Fyllt Til Randen AS | Real estate | 2021 |
| Færgestad AS | Real estate | 2023 |
| Gartnervegen Eiendom AS | Real estate | 2008 |
| Gerlach Montasje AS | Construction | 2021 |
| Gerlach Prosjekt AS | Administrative & support | 2024 |
| Geysir IT AS | Information & communication | 2012 |
| GG3 Bolig AS | Real estate | 2013 |
| Gilhusveien 19 AS | Real estate | 2020 |
| Gilhusveien 5A AS | Real estate | 2013 |
| Gilhusveien 5B, 15, 17 AS | Real estate | 1984 |
| Gjestegården Selskapslokaler AS | Real estate | 2020 |
| GLM Eiendom AS | Real estate | 1991 |
| Gprint AS | Manufacturing | 2007 |
| Granlit Holding AS | | 2020 |
| Green Gardens AS | Administrative & support | 2015 |
| Grønnexus Group AS | | 2026 |
| Gunerius AS | Real estate | 2005 |
| H&Bs Holding AS | | 2024 |
| H/S Anlegg AS | Construction | 2022 |
| Hagbartsen AS | Agriculture & fishing | 2025 |
| Halvorsrud Landbruk Ans | Agriculture & fishing | 1991 |
| Harald CHR. Tønsberg AS | Construction | 1988 |
| Harald Christian Tønsberg Uteservice AS | Professional & scientific | 2025 |
| Haslerud Invest AS | | 2025 |
| Hatlen Bygg Service AS | Construction | 2024 |
| Haugerud Eiendom AS | Real estate | 2008 |
| Haugerud Og Foss Bil AS | Other services | 2014 |
| Hedum AS | Real estate | 2006 |
| Heidelberg Materials Miljø AS | Water & waste | 1984 |
| Helgerud Drift AS | Agriculture & fishing | 2023 |
| Hestevet AS | Professional & scientific | 2015 |
| Hilde H. AS | Other services | 2012 |
| HM Løsninger AS | Professional & scientific | 2025 |
| Hofatek AS | Construction | 2023 |
| Hognerud Holding AS | | 2024 |
| Hogseth Konsulenttjenester AS | Transport & logistics | 2020 |
| Hoksnes & Krogstad AS | Professional & scientific | 2013 |
| Holding 219 AS | Professional & scientific | 2018 |
| Holding TM Bil AS | Wholesale & retail | 2023 |
| Hubone AS | Information & communication | 2013 |
| Hulder AS | Professional & scientific | 1990 |
| Humlen Holding AS | | 2018 |
| Husby Kranbilservice AS | Transport & logistics | 2017 |
| Ibuild AS | Construction | 2025 |
| Ihle Invest AS | Real estate | 2022 |
| Illidi Holding AS | | 2023 |
| Illiditecnica AS | Professional & scientific | 2012 |
| Inbetween AS | Wholesale & retail | 2018 |
| Inbrufo AS | Information & communication | 2005 |
| Infinita - Bjørg Kristin Langnes AS | Professional & scientific | 2018 |
| Ingier Intrapreneur AS | Real estate | 2008 |
| Ingwardo Invest AS | | 2022 |
| Intellekt Invest AS | Wholesale & retail | 2015 |
| Iris Holding AS | Real estate | 2005 |