| Ekk AS | Financial services | 2005 |
| El Ringen AS | Construction | 1988 |
| Elart Metall AS | Manufacturing | 1894 |
| Elg Holding AS | Financial services | 2010 |
| Espen Gravermoen AS | Transport & logistics | 2020 |
| Essem AS | Real estate | 1989 |
| Euro Frakt AS | Transport & logistics | 2018 |
| Eventure AS | Administrative & support | 2025 |
| Eventyrhytter AS | Real estate | 2024 |
| Eventyrsmak SA | Other services | 2002 |
| Eythor Ans Hansen & Røed | | 1989 |
| FB Bygg AS | Construction | 2025 |
| FB Bygg Holding AS | Construction | 2024 |
| FB Eiendomsinvest AS | | 2023 |
| Feelgood Norge AS | | 2025 |
| Fellesveien Gravermoen - Sørliveien SA | Real estate | 2015 |
| Femina Hair Design AS | Other services | 2026 |
| Fen Holding AS | Mining & quarrying | 2021 |
| Fiberselskapet AS | Information & communication | 2021 |
| Filma AS | Information & communication | 2023 |
| Fingarsen Bygg AS | Construction | 2015 |
| Fjordbyen Aktiv AS | Health & social care | 2019 |
| Fjordbyen Atrium AS | Real estate | 2017 |
| Fjordbyen Brygge AS | Real estate | 2019 |
| Fjordbyen Brygge Næring AS | Real estate | 2021 |
| Fjordbyen Legesenter AS | Health & social care | 2019 |
| Fjordbyen Utvikling AS | Real estate | 2020 |
| Fjordgården Eiendom AS | Real estate | 2007 |
| Flamingsales Da | Wholesale & retail | 2022 |
| Flying Team Vikersund AS | Arts & recreation | 2000 |
| Forlaget S K Granum AS | Information & communication | 1992 |
| Fossliseteråsen AS | Real estate | 2006 |
| Frisør Fjulsrud AS | Other services | 2017 |
| Fritidsgården I Vikersund AS | Arts & recreation | 2022 |
| Full Fres AS | Manufacturing | 2018 |
| Fure Barnehage SA | Education | 1977 |
| Gajak AS | Real estate | 2001 |
| Garås Holding AS | Real estate | 2012 |
| Garås Produksjon AS | Information & communication | 2026 |
| Geir Bakken Holding AS | Financial services | 2015 |
| Geir Bjertnæs AS | Construction | 2003 |
| Geithus Bygg AS | Construction | 2011 |
| Gentis AS | Hospitality | 2012 |
| GH Montasjeservice AS | Construction | 2017 |
| GHF Anlegg AS | Construction | 2021 |
| Gibhardt Holding AS | Construction | 2015 |
| Glitrende Holding AS | | 2026 |
| Glømme Holding AS | Construction | 2025 |
| Gruble.Net AS | Education | 2024 |
| Grøterud AS | Construction | 2023 |
| Grøteruds Byggservice AS | Construction | 1979 |
| Grøterudveien Veilag SA | Real estate | 2016 |
| Gulsrud AS | Hospitality | 2020 |
| Gulsrud Leirsted AS | Education | 2009 |
| Gunn-Leyg Rasmussen AS | Health & social care | 2014 |
| GYM2000 Produksjon AS | Manufacturing | 2023 |
| Ha.Dahl Invest AS | | 2024 |
| Hamming Elektro AS | Construction | 2001 |
| Hansen Varehandel AS | Wholesale & retail | 2019 |
| Hansson Skog Og Maskin AS | Agriculture & fishing | 2021 |
| Hartz Entreprenør AS | Construction | 2004 |
| Haw Enterprise Nuf | Construction | 2022 |
| Heggenveien 30 AS | Real estate | 2003 |
| Heggesjøveien SA | Construction | 1964 |
| Helgedalen Gård Da | Agriculture & fishing | 2025 |
| Hellerud Holding AS | | 2026 |
| Hellerud Prosjekt AS | Professional & scientific | 2026 |
| Henåa Gartneri AS | Wholesale & retail | 2023 |
| Hetland Holding AS | Financial services | 2012 |
| Hho Holding AS | Financial services | 2022 |
| Hofsenga AS | Wholesale & retail | 2019 |
| Hofsenga Holding AS | Wholesale & retail | 2015 |
| Hoggvarden AS | Construction | 2020 |
| Holberg 5 AS | Real estate | 2017 |
| Holden Invest AS | | 2023 |
| Holden Nordic AS | Professional & scientific | 2017 |
| Holemoen Eiendom AS | Real estate | 2018 |
| Hollås Invest AS | | 2025 |
| Hometech AS | Information & communication | 2024 |
| Hovde Invest AS | Professional & scientific | 2005 |
| Hovlandsfjell AS | Real estate | 2008 |
| Hovslager Nyløkken AS | Agriculture & fishing | 2019 |
| HT Consult AS | Professional & scientific | 2024 |
| Hulri AS | Professional & scientific | 2017 |
| Håre Holding AS | | 2022 |
| Håvar Åsheim | Agriculture & fishing | 2013 |
| Håvard S Kristiansen AS | Construction | 2012 |
| Hæhre Entreprenør AS | Construction | 2004 |
| Høgd Eiendom AS | Real estate | 2025 |
| Høgd Holding AS | Real estate | 2025 |
| Hønefoss Maskin Eiendom AS | Real estate | 2010 |
| I.Hæhre's Trafikkskole A/S | Education | 1988 |
| Industri Og Maskin Service AS | Manufacturing | 2005 |
| Ingebo Retail AS | Wholesale & retail | 2021 |
| Ingebretsen Eiendom AS | Real estate | 1996 |
| Ingebretsen Holding AS | Wholesale & retail | 2022 |
| Ingebretsen Invest AS | Wholesale & retail | 2022 |
| Inp AS | Other services | 2016 |
| Inspirica AS | Professional & scientific | 2017 |
| Io Eierforum AS | Wholesale & retail | 2024 |