| Founders & Fools Deal 5 AS | | 2021 |
| Founders & Fools Management AS | Professional & scientific | 2021 |
| Founders & Funds AS | | 2021 |
| Founders First IV AS | Financial services | 2021 |
| Founders First V AS | | 2023 |
| Foundraisr AS | Professional & scientific | 2022 |
| Founds AS | Professional & scientific | 2025 |
| Fountain Venture AS | Real estate | 1999 |
| Fountainhead AS | Professional & scientific | 2017 |
| Four Blue Eyes AS | Hospitality | 1994 |
| Four Boxes AS | Wholesale & retail | 2025 |
| Four by Four AS | Arts & recreation | 2023 |
| Four Consultancy AS | Professional & scientific | 2023 |
| Four Design Norge AS | Wholesale & retail | 2019 |
| Four FM Norway AS | Real estate | 2014 |
| Four Invest AS | Real estate | 2004 |
| Four Seasons Property AS | Real estate | 2016 |
| Four Seasons Sushi AS | Hospitality | 2022 |
| Fourfield Scandinavia AS | Wholesale & retail | 1998 |
| Fourier AS | Wholesale & retail | 2021 |
| Fourxp AS | Real estate | 2005 |
| Fovea Studio AS | Professional & scientific | 2025 |
| Fovi AS | Wholesale & retail | 1996 |
| Fox Invest AS | Financial services | 2005 |
| Fox Renhold AS | Administrative & support | 2024 |
| Fox Ventures AS | | 2022 |
| Fox Weimoth AS | Professional & scientific | 2024 |
| Foxhold 2 AS | | 2024 |
| Foxhold AS | | 2018 |
| Foxhound AS | Wholesale & retail | 2023 |
| Foxhound Holding AS | | 2020 |
| Foxtrot Eiendom AS | | 2023 |
| Foxtrot Investco AS | Financial services | 2024 |
| Foyen Management Services AS | Professional & scientific | 1986 |
| Foyer AS | Real estate | 2024 |
| Foym Sports Group AS | Arts & recreation | 2024 |
| Foyn Consult AS | Professional & scientific | 1996 |
| Foyn Friis Kapital AS | | 2025 |
| Foyn Handelseiendom AS | Real estate | 2025 |
| Foyn Invest AS | | 2022 |
| Foyninvest AS | Real estate | 2006 |
| FP Touring AS | Arts & recreation | 2017 |
| FPH Holding AS | | 2025 |
| FR Invest AS | Financial services | 2005 |
| FR Nansensvei 17-19 AS | Real estate | 2005 |
| FR Supply AS | Wholesale & retail | 2019 |
| FR. Nansens Plass 4 AS | Hospitality | 2011 |
| FR. Nansens Plass 9 AS | Real estate | 2007 |
| FR. Nansens Plass 9 II AS | Real estate | 2020 |
| FR. Nansens Vei 12 Ans | Real estate | 1988 |
| FR4 (Utbygging) AS | Real estate | 2006 |
| Fra a Til Å Service AS | Construction | 1997 |
| Fra Fremtiden AS | Professional & scientific | 2023 |
| Fra Henriettes Kjøkken AS | Manufacturing | 2025 |
| Fra Holding AS | Financial services | 2018 |
| Fracar Eiendom AS | Real estate | 2020 |
| Fracta Therapeutics AS | Professional & scientific | 2021 |
| Fragma AS | Professional & scientific | 2021 |
| Fragment AS | Professional & scientific | 2018 |
| Fragment Tidsskrift Da | Arts & recreation | 2024 |
| Fragomen Norway AS | Professional & scientific | 2025 |
| Frahne AS | Real estate | 2019 |
| Frahs Holding AS | | 2019 |
| Frakk Kapital AS | Financial services | 2020 |
| Frakkagjerdvegen 89 AS | Real estate | 2018 |
| Frakkagjerdvegen 90 AS | Real estate | 2025 |
| Frakter AS | Transport & logistics | 2014 |
| Fraktmester AS | Transport & logistics | 2026 |
| Fraktum AS | Transport & logistics | 2025 |
| Fralma AS | Information & communication | 2014 |
| Fraly AS | | 2025 |
| Fram Arken AS | Real estate | 1992 |
| Fram Arrangement AS | Administrative & support | 2003 |
| Fram AS | Wholesale & retail | 2021 |
| Fram Brage Wind SPV AS | | 2021 |
| Fram Bygg AS | Real estate | 2007 |
| Fram Capital AS | Real estate | 1984 |
| Fram Collective AS | Information & communication | 2025 |
| Fram Design AS | Professional & scientific | 2006 |
| Fram Distribusjon AS | Transport & logistics | 2003 |
| Fram Eiendom AS | Real estate | 2019 |
| Fram Ensemble AS | Arts & recreation | 2023 |
| Fram Finans AS | Real estate | 2006 |
| Fram Flow AI AS | Information & communication | 2025 |
| Fram Geilo Ans | Real estate | 1990 |
| Fram Green Technology AS | Professional & scientific | 2020 |
| Fram Gruppen AS | | 2015 |
| Fram H 17 AS | Real estate | 1935 |
| Fram Holding AS | Real estate | 2014 |
| Fram Hovfaret 10 AS | Real estate | 2013 |
| Fram Ingeniørkontor AS | Professional & scientific | 2013 |
| Fram Insurance Brokers AS | Financial services | 2005 |
| Fram Investments AS | Real estate | 2001 |
| Fram Management AS | Real estate | 2019 |
| Fram Marine AS | Professional & scientific | 2009 |
| Fram Media AS | Real estate | 2016 |
| Fram Partners AS | Financial services | 2016 |
| Fram People AS | Professional & scientific | 2025 |
| Fram Project AS | Professional & scientific | 2022 |
| Fram Properties AS | Real estate | 2001 |