| Fyrsten Holding AS | | 2020 |
| Fyrstikkalleen 2B AS | Real estate | 2026 |
| Fyrstikkalléen 1 AS | Real estate | 2016 |
| Fyrstikkalléen 17 Skolebygg AS | Real estate | 2020 |
| Fyrstikkalléen 19 AS | Real estate | 2018 |
| Fyrstikkalléen 20 AS | Real estate | 2018 |
| Fyrstikkalléen 3 AS | Real estate | 2014 |
| Fyrstikkalléen AS | Real estate | 2005 |
| Fyrstikkbakken 14 AS | Real estate | 2020 |
| Fyrstikkbakken 2-4 AS | Real estate | 2014 |
| Fyrstikkbakken 7 AS | Real estate | 2005 |
| Fyrstikktorget Byggherre Bolig AS | | 2025 |
| Fyrstikktorget Eiendom AS | Real estate | 2016 |
| Fyrstikktorget Fotosenter Ans | Professional & scientific | 1990 |
| Fyrstikktorget Legekontor AS | Health & social care | 2004 |
| Fyrstikktorget Tomteselskap AS | | 2025 |
| Fyrstikktorget Utvikling AS | Real estate | 2017 |
| Fyrtind AS | Professional & scientific | 2023 |
| Fyrtøyet AS | Hospitality | 2000 |
| Fyrva AS | Professional & scientific | 2020 |
| Fyrva Holding AS | Professional & scientific | 2020 |
| Fysiak AS | Health & social care | 2017 |
| Fysio- Og Såleklinikk AS | Health & social care | 2012 |
| Fysiohelse AS | Health & social care | 2018 |
| Fysioline Norway AS | Wholesale & retail | 2022 |
| Fysiologic AS | Health & social care | 2017 |
| Fysion AS | Health & social care | 2020 |
| Fysiopartner AS | Wholesale & retail | 1996 |
| Fysioretthjem AS | Health & social care | 2019 |
| Fysiosport AS | Health & social care | 2007 |
| Fysioterapeut Ellen Johansen AS | Health & social care | 2023 |
| Fyw AS | Professional & scientific | 2023 |
| FZ Shipping & Investments AS | Transport & logistics | 2022 |
| FZ Sports AS | Wholesale & retail | 2014 |
| Fzi V AS | Real estate | 2014 |
| Famo A/S | Information & communication | 1992 |
| Fearnleys A/S | Transport & logistics | 1987 |
| Frans Enger A/S | Transport & logistics | 1926 |
| Fred. Olsen Spedisjon A/S | Real estate | 1918 |
| Få Bedre Råd AS | Professional & scientific | 2022 |
| Få Feltgeoteknikk AS | Professional & scientific | 2026 |
| Fåbro Eiendom AS | Real estate | 2012 |
| Fåbro Gård AS | Hospitality | 2023 |
| FÅE1-7 AS | Construction | 2019 |
| Fågjerdet AS | Real estate | 2021 |
| Fågo Eiendom AS | Real estate | 1996 |
| FÅS1-7 AS | | 2018 |
| FÅSI1-7 AS | Information & communication | 2013 |
| Fåvang Sentrum AS | Real estate | 2019 |
| Fåvne Eiendom AS | Real estate | 2010 |
| Fæb Store AS | Wholesale & retail | 2024 |
| Fæbrik AS | Wholesale & retail | 2020 |
| Fæbrikstad AS | Administrative & support | 2023 |
| Fæbtek AS | Information & communication | 2023 |
| Færd Travel AS | Administrative & support | 2025 |
| Færder Bygg Og Invest AS | Real estate | 2016 |
| Færder Consult Da | Professional & scientific | 1996 |
| Færder Energi AS | Financial services | 2005 |
| Færder Entreprenør AS | Construction | 2005 |
| Færder Solutions AS | Professional & scientific | 2020 |
| Færevaag Capital AS | Professional & scientific | 2022 |
| Færevaag Invest AS | | 2026 |
| Færili AS | Financial services | 2001 |
| Færsang AS | | 2020 |
| Færøy Butikkdrift AS | Wholesale & retail | 2024 |
| Fémlone AS | Health & social care | 2021 |
| Férdi Film AS | Information & communication | 2017 |
| Föhn Hairstudio AS | Other services | 2003 |
| Föreningen Greenpeace Norden | Other services | 1998 |
| Fødsel AS | Health & social care | 2022 |
| Fødve AS | Financial services | 2017 |
| Føina AS | Financial services | 1996 |
| Føkkefjord Da | Arts & recreation | 2020 |
| Følling Lund Medisinske AS | Health & social care | 2017 |
| Føniks Advokater AS | Professional & scientific | 2020 |
| Føniks AS | Professional & scientific | 1998 |
| Føniks Konsepter AS | Hospitality | 2012 |
| Fønkhagen SA | Arts & recreation | 2023 |
| Fønvind AS | | 2023 |
| Før Group AS | Professional & scientific | 2019 |
| Førde Etatbygg AS | Financial services | 2020 |
| Føreid Partners AS | Professional & scientific | 2026 |
| Føreland Holding AS | Health & social care | 2023 |
| Førerkort Agenten AS | Education | 2018 |
| Førerkort Experten AS | Education | 2014 |
| Førerkort Spesialisten AS | Education | 2021 |
| Førland Holding AS | | 2024 |
| Førland Rør AS | Construction | 2017 |
| Først & Fremst AS | Administrative & support | 1994 |
| Først & Fremst Eit AS | Professional & scientific | 2022 |
| Første Rad AS | Information & communication | 2022 |
| Førstehjelperen AS | Education | 2013 |
| Førstehjelpsgruppen AS | Education | 2019 |
| Føsseberge Kraftverk AS | Energy | 2023 |
| Føyen Digital AS | Information & communication | 2024 |
| Føyk AS | Wholesale & retail | 2026 |
| Fürst Eiendom AS | Real estate | 2003 |
| Fürst Holding AS | Health & social care | 2016 |
| G & T Oslo AS | Professional & scientific | 2014 |
| G a Skogland Eiendom AS | Real estate | 2008 |