| Fridheim Industrier AS | Real estate | 2001 |
| Fridman Invest AS | | 2025 |
| Fridtid AS | Other services | 2025 |
| Fridtjof AS | Arts & recreation | 2024 |
| Fridtjof Eiendom AS | Real estate | 2015 |
| Fridtjof Freyja AS | Wholesale & retail | 2019 |
| Fridtjof Helle Brevig AS | Professional & scientific | 2023 |
| Fridtjof Invest AS | Real estate | 2015 |
| Fridtjof Nansens Plass 5 AS | Real estate | 2021 |
| Fridtjof Nansens Vei 2 AS | Real estate | 2021 |
| Fridtjof Parkering AS | Transport & logistics | 1966 |
| Fridtjov Såheim AS | Arts & recreation | 2026 |
| Frieda AS | | 2023 |
| Frieda Invest AS | | 2023 |
| Friedberg Invest AS | | 2021 |
| Friedensburg Invest AS | Financial services | 2016 |
| Friedheim Holding AS | | 2023 |
| Friendly AS | Arts & recreation | 2019 |
| Friendly Balance AS | Arts & recreation | 2025 |
| Friendly Trening AS | Arts & recreation | 2016 |
| Friends & Family Studios AS | Wholesale & retail | 2025 |
| Friends Event AS | Arts & recreation | 2016 |
| Friends Farooqi Ans | Wholesale & retail | 1987 |
| Friends Group AS | Hospitality | 2023 |
| Friends Hospitality Group AS | Hospitality | 2018 |
| Friends Hospitality Group Norway AS | Hospitality | 2022 |
| Frigaard Eiendom Krambua AS | Real estate | 2010 |
| Frigg AS | | 2020 |
| Frigg Investments AS | | 2020 |
| Frigg Trading AS | Wholesale & retail | 1991 |
| Frigga AS | | 2022 |
| Frigopanel AS | Wholesale & retail | 2017 |
| Frigoteknikk AS | Other services | 2023 |
| Frihet Invest AS | | 2016 |
| Frihey AS | Professional & scientific | 2018 |
| Frii Group AS | Other services | 2021 |
| Frii Invest AS | | 2022 |
| Friis & Friis AS | Real estate | 2002 |
| Friis Eiendom AS | Real estate | 2000 |
| Friis Holding AS | | 2020 |
| Friisbo 1 AS | Real estate | 2019 |
| Friisbo 2 AS | Real estate | 2019 |
| Friisbo 3 AS | Real estate | 2019 |
| Friisk Holding AS | | 2025 |
| Friisk Kapital AS | Financial services | 2015 |
| Friispirit AS | Administrative & support | 2015 |
| Friivii AS | Information & communication | 2014 |
| Frikasa AS | Financial services | 2014 |
| Frikasa Invest AS | Health & social care | 2021 |
| Frikk Herding Holding AS | | 2020 |
| Frikke AS | | 2024 |
| Friksjon AS | Wholesale & retail | 2012 |
| Friksjon Film AS | Information & communication | 2017 |
| Friland Film AS | Information & communication | 1993 |
| Friland Produksjon AS | Arts & recreation | 2008 |
| Frilans Finans Norge AS | Administrative & support | 2017 |
| Frilanslivet AS | Arts & recreation | 2022 |
| Frill AS | Professional & scientific | 2005 |
| Frilsethdesign AS | Manufacturing | 2024 |
| Friluftsbarnehagene AS | Education | 1992 |
| Friluftslegen AS | Health & social care | 2025 |
| Friluftsliv Multimedia AS | Information & communication | 1996 |
| Friluftsproffen AS | Wholesale & retail | 2025 |
| Frima Holding AS | Professional & scientific | 1992 |
| Friman Maskin AS | Wholesale & retail | 2014 |
| Frimann AS | Arts & recreation | 2010 |
| Frimann Comms AS | Professional & scientific | 2019 |
| Frimann Thorkildsen Rezapur AS | Other services | 2023 |
| Frimark AS | Professional & scientific | 2019 |
| Frimureren.No Da | Wholesale & retail | 2007 |
| Frinathan AS | | 2023 |
| Fringco AS | | 2019 |
| Friotech AS | Financial services | 2006 |
| Fripe AS | | 2021 |
| Frippy Prosjekt AS | Education | 2013 |
| Frisak Invest AS | | 2020 |
| Frisbeesport Da | Wholesale & retail | 2001 |
| Frisch AS | Professional & scientific | 2025 |
| Frisch Forvaltning AS | Real estate | 2010 |
| Frisella Frisør AS | Other services | 2019 |
| Frisk Helse AS | Health & social care | 2017 |
| Frisk Helsebemanning AS | Administrative & support | 2023 |
| Frisk Hus AS | Construction | 2023 |
| Frisk Kapital AS | | 2026 |
| Frisk Legekontor AS | Health & social care | 2012 |
| Frisk Service AS | Administrative & support | 2011 |
| Friske Dyr AS | Professional & scientific | 2024 |
| Friske Dyr Helsfyr AS | Professional & scientific | 2023 |
| Friske Dyr Skullerud AS | Professional & scientific | 2025 |
| Friske Fakta AS | Information & communication | 2015 |
| Fristads AS | Wholesale & retail | 2015 |
| Fristil Eiendom AS | Real estate | 2023 |
| Fristil Gruppen AS | Professional & scientific | 2023 |
| Fristil Royalty AS | Professional & scientific | 2025 |
| Frisør 9MM Da | Other services | 2010 |
| Frisør Consult Ans | Wholesale & retail | 1994 |
| FRISØR De COLORES DA | Other services | 1988 |
| Frisørcafeen AS | Other services | 2012 |
| Frisørene Lund Kristiansen Og Myrhaug Da | Other services | 1998 |
| Frisørpikene AS | Other services | 2015 |