| Facilityflow AS | Information & communication | 2022 |
| Factoring Finans, Et Datterselskap Av Brage Finans AS | Financial services | 2007 |
| Fagerbrekka Invest AS | Financial services | 2005 |
| Fagergaard Invest AS | | 2017 |
| Fagerliveien AS | Real estate | 2025 |
| Fagerlund Port Og Gjerde AS | Real estate | 2024 |
| Fagerstrand Næringspark AS | Real estate | 2008 |
| Fagertunet Invest AS | Real estate | 2020 |
| Fagmontøren Sander Eidstumo AS | Construction | 2024 |
| Fagn AS | Hospitality | 2017 |
| Fagrabrekka AS | Real estate | 2012 |
| Fagtrykk Eiendom AS | Real estate | 1997 |
| Fair Advisory Drift AS | Professional & scientific | 2025 |
| Fair Advisory Holding AS | | 2025 |
| Fairassess AS | Professional & scientific | 2023 |
| Faircore AS | | 2026 |
| Fairway Holding AS | | 2021 |
| Faks AS | | 2021 |
| Falck AS | Professional & scientific | 2021 |
| Falck Musikk AS | Wholesale & retail | 2010 |
| Falck Omnia AS | Health & social care | 2022 |
| Falck X-Ray AS | Health & social care | 2021 |
| Falcon Mipco AS | | 2024 |
| Falk & Falk Holding AS | Hospitality | 2026 |
| Falk Holding AS | Wholesale & retail | 2005 |
| Falk Profil AS | Professional & scientific | 2020 |
| Falkanger Sko AS | Wholesale & retail | 1961 |
| Falkenborg Eiendom AS | Real estate | 2023 |
| Falkenborg Gård AS | Real estate | 2007 |
| Falkenborg Holding AS | Real estate | 2019 |
| Falkenborg Lakk Og Bil AS | Other services | 2013 |
| Falkenborgvegen 32 Parkering AS | Real estate | 2023 |
| Falkenborgvegen 35 Eiendom AS | Real estate | 2021 |
| Falkenborgvegen 37 Eiendom AS | Real estate | 2007 |
| Falkenborgvegen 38 Eiendom AS | Real estate | 2005 |
| Falkhø AS | Real estate | 2005 |
| Falkmo Invest AS | Real estate | 2019 |
| Falko AS | Professional & scientific | 1988 |
| Falkpartner AS | Professional & scientific | 2025 |
| Famara Holding AS | | 2007 |
| Famkamsam AS | | 2017 |
| Fanfare Film AS | Information & communication | 2022 |
| Fanlink AS | Information & communication | 2026 |
| Fann AS | Financial services | 2017 |
| Fannrem Butikkutvikling AS | Real estate | 2022 |
| Fantana AS | Information & communication | 2016 |
| Fara AS | Information & communication | 2005 |
| Farao AS | Real estate | 2016 |
| Faren Min AS | Construction | 2024 |
| Fargehuset Østerlie AS | Wholesale & retail | 2020 |
| Farm Society AS | Agriculture & fishing | 2018 |
| Farmocean Subsea AS | Professional & scientific | 2024 |
| Faro AS | Real estate | 2006 |
| Fast Tann AS | Health & social care | 2023 |
| Fastcut AS | Other services | 2021 |
| Fastlager Holding AS | | 2024 |
| Fatback Ans | Wholesale & retail | 2002 |
| Faunvèr AS | Professional & scientific | 2026 |
| Favn Software AS | Information & communication | 2020 |
| Fba Holding AS | Real estate | 2011 |
| FBV Eiendom AS | Real estate | 2025 |
| Fdv-Consult AS | Professional & scientific | 1985 |
| Feb Trondheim Da | Arts & recreation | 2011 |
| Feelgood Valentinlyst AS | Arts & recreation | 2020 |
| Fegin AS | Wholesale & retail | 2025 |
| Feldberg AS | Information & communication | 2022 |
| Feldsgt Holding AS | Real estate | 2023 |
| Felgteknikk AS | Other services | 2017 |
| Felipluss AS | Professional & scientific | 2025 |
| Felix AS | Real estate | 1988 |
| Felleskjøpet Forutvikling AS | Professional & scientific | 2012 |
| Felm AS | Hospitality | 2020 |
| Fem Engineering AS | Professional & scientific | 1994 |
| Fem Maritime AS | Professional & scientific | 2001 |
| Fem-M AS | Manufacturing | 2020 |
| Fembøring AS | | 2025 |
| Femme AS | Arts & recreation | 2011 |
| Femme City Lade AS | Education | 2023 |
| Femto AS | Professional & scientific | 2014 |
| Fenice Invest AS | Professional & scientific | 2020 |
| Fenrits AS | Wholesale & retail | 1999 |
| Ferdmarin AS | Arts & recreation | 2018 |
| Fernandez Holding AS | Information & communication | 2022 |
| Ferring Invest AS | Financial services | 2018 |
| Ferrx AS | Manufacturing | 2005 |
| Ferrx Holding AS | Professional & scientific | 2006 |
| Ferstad Hus Og Helse AS | Real estate | 2012 |
| Festningen AS | Arts & recreation | 2018 |
| Festningen Dagligvare AS | Wholesale & retail | 2017 |
| Festningsgata 2 AS | Real estate | 2021 |
| Fevaag Bygg AS | Construction | 2025 |
| Ffu AS | | 2017 |
| FG Catering AS | Hospitality | 2009 |
| FG Prototyping Da | Information & communication | 2012 |
| FG17B AS | Hospitality | 2025 |
| FG7 Seksjon 2 AS | Real estate | 2026 |
| FHS Holding AS | Construction | 2005 |
| FHV Holding AS | | 2026 |
| Fia Frisør AS | Other services | 2022 |
| Fieldata AS | Information & communication | 2011 |