| Fruktboden Slemdal AS | Wholesale & retail | 2014 |
| Frukthagen AS | Wholesale & retail | 2015 |
| Frukthagen Hardanger AS | Manufacturing | 2021 |
| Frukthagen Norge AS | Wholesale & retail | 2013 |
| Fruktsukker AS | Hospitality | 2026 |
| Fruktveien Lier AS | Real estate | 2021 |
| Fruma AS | Wholesale & retail | 1988 |
| Frux Shipping & Offshore AS | | 2013 |
| Frwrd AS | Professional & scientific | 2018 |
| Frwrd Retail AS | Wholesale & retail | 2019 |
| Fry Dykk AS | Construction | 2024 |
| Fryd & Gammen AS | Information & communication | 2025 |
| Fryd Manglerud AS | Hospitality | 2023 |
| Fryd Utvikling AS | Real estate | 2019 |
| Frydays Group AS | Hospitality | 2020 |
| Frydbo AS | Real estate | 2017 |
| Fryde AS | Professional & scientific | 2022 |
| Frydenbergveien 48 AS | Real estate | 2008 |
| Frydenbygg Eiendom AS | Real estate | 2018 |
| Frydenbø Holding AS | Real estate | 2015 |
| Frydendal Holding AS | Financial services | 2005 |
| Frydenhaug - Sio Barnehage AS | Education | 2022 |
| Frydenhaugveien 2 AS | Real estate | 1970 |
| Frydenlund & Søn AS | | 2025 |
| Frydenlund Eiendom Ans | Real estate | 1989 |
| Frydenlundgata 2 Holding AS | Real estate | 2024 |
| Frydenlundgata 32 AS | Real estate | 2022 |
| Frydenlundgate 6 Næring AS | Real estate | 2024 |
| Frydenlundgate 6 Oslo AS | | 2024 |
| Frys Invest AS | Real estate | 2007 |
| Frysja Bygg AS | Construction | 1997 |
| Frysja Eiendom AS | Professional & scientific | 2019 |
| Frysja Farvehandel AS | Wholesale & retail | 2012 |
| Frysja Gårdsinvest AS | Real estate | 2000 |
| Frysja Håndverk AS | Construction | 2018 |
| Frysja Invest AS | Real estate | 2011 |
| Frysja Legekontor Da | Health & social care | 2017 |
| Frysja Sushi AS | Hospitality | 2023 |
| Frysjaparken Eiendom AS | Real estate | 1998 |
| Frysjaparken Felt a Barnehage AS | Real estate | 2022 |
| Frysjaparken Felt a Næring AS | Real estate | 2022 |
| Frysjaparken Felt B Næring AS | Real estate | 2020 |
| Frysjaparken Felt C Næring AS | Real estate | 2022 |
| Frysjaparken Felt D Næring AS | Real estate | 2022 |
| Frysjaparken Finer AS | Real estate | 2021 |
| Frysjaparken Utvikling AS | Real estate | 2013 |
| Frysjaveien 27A AS | Real estate | 2026 |
| Frysjaveien 31 Holding AS | Real estate | 2014 |
| Frysjaveien 31 Tomteselskap AS | Real estate | 2014 |
| Frysjaveien 33 AS | Real estate | 2005 |
| Frysjaveien 33 C AS | Real estate | 2017 |
| Frysjaveien Invest AS | | 2023 |
| Fryskap AS | Wholesale & retail | 2024 |
| Frævleik AS | Professional & scientific | 2015 |
| Frø AS | Professional & scientific | 2017 |
| Frø Business Management AS | Professional & scientific | 2023 |
| Frø Construction AS | Real estate | 2023 |
| Frø Holdings AS | | 2026 |
| Frø Nordic AS | Professional & scientific | 2019 |
| Frø Operations AS | Hospitality | 2023 |
| Frøbemanning AS | Education | 2024 |
| Frøen Hage AS | Real estate | 2024 |
| Frøhne-Aarhus Invest AS | Real estate | 2021 |
| Frøhornet Bakevarer AS | Wholesale & retail | 2012 |
| Frøiland Invest AS | Professional & scientific | 2006 |
| Frøishagen Consulting AS | Professional & scientific | 2014 |
| Frøisland Invest AS | Information & communication | 2025 |
| Frøisland-Interimledelse AS | Information & communication | 2025 |
| Frøken Dianas Salonger AS | Wholesale & retail | 2008 |
| Frøken Engelsen AS | | 2019 |
| Frøken Grønn AS | | 2019 |
| Frøken Nordlys AS | Real estate | 2018 |
| Frøken Smillas AS | Hospitality | 2023 |
| Frøken Svamo AS | Wholesale & retail | 2010 |
| Frølichs Invest AS | | 2025 |
| Frønningen AS | Financial services | 2008 |
| Frønsdal Invest AS | | 2026 |
| Frønsvolden AS | Professional & scientific | 1999 |
| Frøsaker Holding AS | | 2014 |
| Frøy Marina Drift AS | Arts & recreation | 2026 |
| Frøy Marina Holding AS | | 2026 |
| Frøya Agency AS | Professional & scientific | 2026 |
| Frøya Forvaltning AS | Real estate | 2005 |
| Frøya Industrieiendom AS | Real estate | 2012 |
| Frøya Industrieiendom Holding AS | Real estate | 2017 |
| Frøya's Fristelser AS | Wholesale & retail | 2015 |
| Frøyas Gate 9 AS | Real estate | 2012 |
| Frøyd AS | Health & social care | 2021 |
| Frøyd Nordstrand AS | Other services | 2023 |
| Frøyna Holding AS | | 2025 |
| Frøysaker Invest AS | | 2021 |
| Frøysten AS | Financial services | 2012 |
| Frøytunet Utvikling AS | Real estate | 2018 |
| Frøö AS | Professional & scientific | 2024 |
| FS Bidco AS | Information & communication | 2023 |
| FS Capital AS | Administrative & support | 2020 |
| FS Container AS | Transport & logistics | 2017 |
| FS Container Holding AS | Transport & logistics | 2017 |
| FS Invest Oslo AS | Wholesale & retail | 2010 |
| FS It-Løsninger AS | Information & communication | 2012 |