| Felix Iversen AS | Health & social care | 2007 |
| Festmakkeren AS | Administrative & support | 2018 |
| Fiksenfisk AS | Agriculture & fishing | 2010 |
| Filicinae Holding AS | | 2023 |
| Fincom AS | Information & communication | 2017 |
| Finnmark Byggservice AS | Wholesale & retail | 1988 |
| Finnmark Fjellservice AS | | 2026 |
| Finnmark Gjenvinning AS | Water & waste | 1998 |
| Finnmark Holding AS | Wholesale & retail | 2000 |
| Finnmark Kraft AS | Energy | 2009 |
| Finnmark Moods AS | Administrative & support | 2019 |
| Finnmark Motorsenter AS | Wholesale & retail | 2007 |
| Finnmark Reiseliv AS | Administrative & support | 2000 |
| Finnmark Sand AS | Mining & quarrying | 1994 |
| Finnmark Snowmobile Safari AS | Arts & recreation | 1991 |
| Finnmark Tak Og Bygg AS | Construction | 2019 |
| Finnmark Takservice AS | Construction | 2011 |
| Finnmark Utemiljø AS | Administrative & support | 2019 |
| Finnmark Øyeklinikk AS | Health & social care | 2026 |
| Finnmark Øyeklinikk Nuf | Health & social care | 2014 |
| Finnmarkbyggkontroll AS | Professional & scientific | 2017 |
| Finnmarks-Vidda AS | Wholesale & retail | 2018 |
| Finnmarksapotekene AS | Wholesale & retail | 2000 |
| Finnmarkshallens Driftsselskap AS | Real estate | 1996 |
| Finnmarkskonferansen AS | Education | 2005 |
| Finnmarkskontoret AS | Arts & recreation | 2019 |
| Finnmarksliv AS | Administrative & support | 2024 |
| Finnmarksløpet AS | Arts & recreation | 2001 |
| Fisk Og Sjømatbilen AS | Wholesale & retail | 2024 |
| Fiskernilsen AS | Agriculture & fishing | 2022 |
| FJ Multiservice AS | Real estate | 2026 |
| Fjell & Anleggsservice AS | Construction | 2016 |
| Fjelltomta AS | Real estate | 2013 |
| Fjellveien AS | Professional & scientific | 2024 |
| Fjellveien Holding AS | | 2016 |
| Fjord Alta AS | | 2024 |
| Fjord Havsel AS | Agriculture & fishing | 2004 |
| Fjuel Alta AS | | 2026 |
| Fk-Motor AS | Manufacturing | 2017 |
| Flatmoen Natur AS | Arts & recreation | 2020 |
| Fleksibelvei AS | | 2023 |
| Flimre Studio AS | Information & communication | 2022 |
| Flinkestadgutten AS | Wholesale & retail | 2005 |
| Flinkestadjenta AS | | 2023 |
| Flomfaret Eiendom AS | Real estate | 2019 |
| Flåtten Eiendom AS | Real estate | 2023 |
| Foas Invest AS | | 2020 |
| Forher AS | Education | 2023 |
| Forretningsbygg AS | Real estate | 1979 |
| Forsblom AS | | 2021 |
| Forsikring Og Besiktigelse AS | | 2020 |
| Fossa AS | Administrative & support | 2026 |
| Fr-Tak AS | Construction | 2026 |
| Franzbakken AS | Real estate | 2017 |
| Fredrikolsen AS | Manufacturing | 2019 |
| Fri Flyt Alta AS | Construction | 2021 |
| Frida Linnea AS | Agriculture & fishing | 2019 |
| Frikant Mediedesign AS | Professional & scientific | 2015 |
| Frikatoden AS | Health & social care | 2016 |
| Frisk Elektro AS | Construction | 2026 |
| Frisk Kristiansen Holding AS | | 2026 |
| Fronese Rådgivning AS | Professional & scientific | 2014 |
| Frøya Beauty AS | Other services | 2024 |
| Full Last AS | Agriculture & fishing | 2026 |
| Full Spiker AS | Administrative & support | 2021 |
| Furulund Drift AS | Construction | 2016 |
| Furuly Barnehage AS | Education | 2022 |
| Fyllingsveien 19 Kirkenes AS | | 2018 |
| Fysikalsk Terapi AS | Health & social care | 1992 |
| Fysioterapeut Karine Slettli AS | Health & social care | 2019 |
| Fysioterapeut Roar Olsen AS | Health & social care | 2015 |
| Fysioterapeut Runa Nesje AS | Health & social care | 2017 |
| Fysioterapeut Siril P. Hammari AS | Health & social care | 2019 |
| Fyyk AS | Professional & scientific | 2020 |
| Féleth Da | Arts & recreation | 2019 |
| Gakori Pizzeria AS | Hospitality | 2017 |
| Gamleposten Alta AS | Real estate | 2006 |
| Gargia Fjellstue AS | Real estate | 2012 |
| GBJ Eiendom AS | Real estate | 2021 |
| Geir Svendsen Entreprenør AS | Construction | 1996 |
| Geonord AS | Professional & scientific | 2011 |
| Gfstat AS | Wholesale & retail | 2016 |
| Gib Invest AS | | 2025 |
| Giitu AS | Administrative & support | 2023 |
| Gisle Eiendom AS | Real estate | 2003 |
| GJ Bil Og Caravan AS | Wholesale & retail | 2017 |
| GK Multiservice AS | Construction | 2021 |
| Gladkov Detailing AS | Other services | 2025 |
| Glass-Service Alta AS | Construction | 2022 |
| Glass-Service Ans Å Og P Johansen | Real estate | 1971 |
| Glød Eiendom AS | Real estate | 2014 |
| Glød Explorer AS | Arts & recreation | 2014 |
| Glød Holding AS | Administrative & support | 2012 |
| GMH Eiendom AS | Real estate | 2005 |
| Gobmi AS | Professional & scientific | 2018 |
| God Maskin AS | Administrative & support | 2019 |
| Got AS | Administrative & support | 2020 |
| GR. Holding AS | Construction | 2011 |
| Grafix AS | Professional & scientific | 2023 |
| Grefstad Fiskeriselskap AS | Agriculture & fishing | 2026 |