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| Frank Thomsen Holding AS | Eidsvågneset | 2024 |
| Frank Vignes Consulting AS | Klepp Stasjon | 2023 |
| Franken NDT Service GmbH | 90475 Nürnberg | 2011 |
| Frankenstein Invest AS | Sandnes | 2008 |
| Franklincovey Norway AS | Drøbak | 2019 |
| Franks Holding AS | Mosjøen | 1998 |
| Franks Regnskap AS | Lindesnes | 2024 |
| Franks Tank AS | Stavanger | 2006 |
| Franmar Services Limited | Redcar Ts10 5Sh | 2012 |
| Frann Økonomi AS | Strandebarm | 2025 |
| Franoco AS | Nannestad | 1998 |
| Franqueza AS | Oslo | 2019 |
| Frans Invest AS | Hvalstad | 2012 |
| Fransson Holding AS | Gjerdrum | 2022 |
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| Frantzens Husholding AS | Horten | 2024 |
| Franz Messel-Jenssen Ltd Nuf | Jar | 2009 |
| Frap Consulting GmbH Planung - Marketing - Vertrieb | 80995 München | 2013 |
| Fraqture Holding AS | Tønsberg | 2022 |
| Fras AS | Oslo | 2010 |
| Fraser Ax Ltd | Banffshire Ab56 1Rp | 2019 |
| Fraser Survey Engineering Limited | Dundee Dd5 1Nb Scotland | 2014 |
| Fraspark AS | Stjørdal | 2016 |
| Frassino Terra AS | Kristiansand S | 2014 |
| Fratana AS | Kristiansand S | 2018 |
| Fraunhofer-Gesellschaft Nuf | De-80686 München | 2026 |
| Frauscher Sensortechnik GmbH | At-4774 St. Marienkirchen | 2023 |
| Freberg AS | Vesterøy | 2025 |
| Frebra Holding AS | Rolvsøy | 2015 |
| Fred Consulting AS | Oslo | 2019 |
| Fred Jonny AS | Oslo | 2009 |
| Fred Selnes AS | Høvik | 2005 |
| Fred the Chef Foods AS | Hamar | 2016 |
| Fred. Olsen 1848 AS | Oslo | 2015 |
| Fred. Olsen Flovoltaic AS | Oslo | 2021 |
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| Fred. Olsen Renewables AS | Oslo | 2021 |
| Fred. Olsen Renewables UK Holding AS | Oslo | 2021 |
| Fred. Olsen Seawind ASA | Oslo | 2001 |
| Fredag Oslo AS | Oslo | 2024 |
| Fredenshavn AS | Sandefjord | 2026 |
| Frederic Taillier AS | Oslo | 2018 |
| Frederik Bagger Aps | Dk-1107 København | 2022 |
| Fredheim Digital AS | Sør-Fron | 2023 |
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| Frednes Consult AS | Porsgrunn | 2005 |
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| Fredrik Aarnes Holding AS | Hosle | 2026 |
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| Fredrik Foto AS | Lillestrøm | 2025 |
| Fredrik Grunde Nielsen AS | Drøbak | 2025 |
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| Fredrik Haven Invest AS | Gamle Fredrikstad | 2016 |
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| Fredrikson Development AS | Kvaløysletta | 2020 |
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| Fredrikstad Dyrehospital AS | Fredrikstad | 2012 |
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| Fredrikstad Revisjon AS | Fredrikstad | 2018 |
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| Fredrikstad Takseringsforretning AS | Gressvik | 1994 |
| Fredrikstad Veterinærpraksis AS | Gressvik | 2018 |
| Fredriksten AS | Høydalsmo | 2005 |
| Fredsvold AS | Sunndalsøra | 2018 |
| Fredøy Gruppen AS | Skien | 2024 |
| Free AS | Tønsberg | 2019 |
| Free Motion Holding AS | Oslo | 2019 |
| Freeborn AS | Tønsberg | 2017 |
| Freecom AS | Rasta | 2018 |
| Freecon the Container House of Freedom AS | Ranheim | 2024 |
| Freedom Consulting AS | Oslo | 2000 |
| Freefun AS | Drammen | 2026 |
| Freelance Enhance Limited | Aberdeen Ab11 7Sl | 2009 |
| Freelance Euro Contracting Ltd | Aberdeen Ab11 7Sl | 2006 |
| Freelance Euro Service (Cmxxxvii) Limited | Ab11 7Sl Aberdeen | 2010 |
| Freelance Euro Services (Mcccxxxiv) Ltd | Isle Of Lewis Hs12Dz | 2008 |
| Freelance Euro Services (Mmcccxxi) Ltd | Aberdeen Ab11 7Sl Scotland | 2010 |
| Freelance Foto AS | Talvik | 2009 |
| Freelance Projects AS | Stathelle | 2020 |
| Freeminds Media | Ytre Enebakk | 2014 |
| Freemotion AS | Brøttum | 2015 |
| Freemountain Norway AS | Oslo | 2014 |
| Freestyle Consulting AS | Oslo | 2024 |
| Freetech AS | Tønsberg | 2026 |
| Freethemedia AS | Oslo | 2025 |
| Freetrailer Norge AS | Dal | 2015 |
| Freeway Norge | Dk-8800 Viborg | 2011 |
| Frei AS | Stavanger | 2022 |
| Freidig Holding AS | Oslo | 1990 |
| Freightseeker AB | Se-506 30 Borås | 2016 |
| Freija AS | Oslo | 2022 |
| Freino Regnskap AS | Moss | 2019 |
| Freja Econ AS | Svolvær | 2021 |