| Energihuset Sport & Fritid AS | Wholesale & retail | 2002 |
| Engebretsen Investeringer AS | | 2021 |
| Enzo Sikkerhet AS | Construction | 2016 |
| Erab Holding AS | | 2023 |
| Eternal Embrace AS | Information & communication | 2024 |
| Euro Eiendom AS | Real estate | 1997 |
| Euroholding AS | Real estate | 2005 |
| Euroinvest AS | Real estate | 2004 |
| Expo Gol AS | Real estate | 2019 |
| Fabel & Fakta Filmfortelling Ans | Information & communication | 1993 |
| Familiesjappa AS | Real estate | 2020 |
| Feelgood Nesodden AS | Arts & recreation | 2023 |
| Feelgood Vinterbro AS | Arts & recreation | 2024 |
| Fehb Eiendom AS | Real estate | 2025 |
| FGL AS | Real estate | 2021 |
| Field Equation AS | Professional & scientific | 2026 |
| Finance Partner AS | Administrative & support | 2020 |
| Finn Arctander Rådgivning AS | Professional & scientific | 2004 |
| Fjellseth Holding AS | Real estate | 2016 |
| Fjellstrand Omsorgsboliger AS | Real estate | 2015 |
| Fjorden Electra AS | Information & communication | 2020 |
| Flaskebekk Legesenter AS | Health & social care | 2017 |
| Flasken Lunsj Og Vinstue AS | Hospitality | 2001 |
| Flegma AS | Real estate | 2011 |
| Flow Media Solutions AS | Information & communication | 2019 |
| Flyt Studio AS | Education | 2015 |
| Flyum AS | Financial services | 2015 |
| Follo Varmepumpeservice AS | Construction | 2023 |
| Fortify AS | | 2012 |
| Fotograf Simon Skreddernes AS | Professional & scientific | 2013 |
| Framhus AS | Professional & scientific | 2019 |
| Fredheim 1450 Invest AS | Financial services | 2013 |
| Frimann TV AS | Information & communication | 2023 |
| Frua Spiseri AS | Hospitality | 2023 |
| Fruentimmere AS | Wholesale & retail | 2011 |
| Frufinstad AS | Wholesale & retail | 2024 |
| Fu Hai AS | Hospitality | 2023 |
| Fundament Mur Og Flis AS | Construction | 2023 |
| Furnes-Lorentzen Holding AS | Financial services | 2008 |
| Gabcom AS | Financial services | 2005 |
| Games Experiences Media AS | Information & communication | 2018 |
| Garp Eiendom AS | Professional & scientific | 2021 |
| Gemba Invest AS | | 2007 |
| Geo-Search Ans | Professional & scientific | 1987 |
| GHR Invest AS | | 2008 |
| Giring AS | Education | 2021 |
| Girlander AS | Professional & scientific | 2021 |
| Glimt Management AS | Other services | 2021 |
| Goat AS | | 2021 |
| Green Living Oslo Sagveien AS | Real estate | 2018 |
| Greennor AS | Professional & scientific | 2022 |
| Grunnlegene AS | Health & social care | 2023 |
| Gruze AS | | 2025 |
| Gunnar Leikvold AS | Construction | 1995 |
| Guten AS | | 2026 |
| Gymbros Nutrition AS | Wholesale & retail | 2026 |
| Hafsteen AS | Real estate | 2025 |
| Hagefokus AS | Administrative & support | 2008 |
| Hahaug Eiendom AS | Real estate | 2005 |
| Harald Norvik Insight AS | Professional & scientific | 2000 |
| Haug Entreprenørservice AS | Construction | 1990 |
| Havluft Holding AS | Information & communication | 2020 |
| Havtorn AS | Professional & scientific | 2018 |
| HC Prosjekt AS | Real estate | 2017 |
| HCL Holding AS | | 2018 |
| Hedda Film Og Litteratur AS | Information & communication | 2024 |
| Hef 185 Holding AS | | 2023 |
| Helmar AS | | 2022 |
| Helw Invest AS | | 2020 |
| Hemica AS | Real estate | 1996 |
| Henke AS | Professional & scientific | 2026 |
| Herr Hanssen Salong AS | Other services | 2020 |
| Hjallum Eiendom 1 AS | Real estate | 2014 |
| Hjallum Holding AS | Real estate | 2014 |
| Hjelleset Universal AS | Agriculture & fishing | 2020 |
| Hjørnet Kiosk- Og Dagligvare AS | Wholesale & retail | 2014 |
| Hkeh AS | | 2023 |
| HM Forvaltning AS | Real estate | 2005 |
| HM Skoglund Invest AS | Wholesale & retail | 2022 |
| HM Surf AS | Arts & recreation | 2020 |
| Holst AS | | 1989 |
| Hulder Garn AS | Professional & scientific | 2018 |
| Hydrogen Dynamo AS | Professional & scientific | 2018 |
| HÅR1 Holding AS | Other services | 2023 |
| Højland AS | | 2026 |
| Ifollo Kommunikasjon Ans | Manufacturing | 2003 |
| Ijw AS | | 2020 |
| Ilars AS | Financial services | 2007 |
| Imagine Birthworks AS | Health & social care | 2018 |
| Implement AS | Information & communication | 2021 |
| Ina Johannesen AS | Arts & recreation | 1987 |
| Inbetween 2 AS | | 2022 |
| Inga Ibsdotter Lilleaas AS | Arts & recreation | 2026 |
| Ingefær AS | Education | 2016 |
| Inkafjeldvaer AS | Financial services | 2016 |
| Insala AS | Professional & scientific | 2020 |
| Integral Film AS | Information & communication | 2004 |
| Iris Publishing AS | Information & communication | 2020 |
| IT Selskapet AS | Information & communication | 2023 |
| Jan Petter Olsen AS | Construction | 2014 |