| Fauske Revisjon AS | Professional & scientific | 1995 |
| Fauske Rør Holding AS | Construction | 2017 |
| Fauske Snekker Og Tømrer Service AS | Construction | 2025 |
| Fauske Storbilsenter AS | Other services | 2020 |
| Fauske Storbilsenter Eiendom AS | Real estate | 2023 |
| Fauske Tannteknikk AS | Manufacturing | 2002 |
| Fauske Taxi SA | Transport & logistics | 2004 |
| Fauske Trelast AS | Wholesale & retail | 1985 |
| Fauskebygg AS | Construction | 1984 |
| Fauskebygg Holding AS | Construction | 2007 |
| Fauskebygg Invest AS | Construction | 1997 |
| Fauskegruppen AS | Real estate | 2004 |
| Fausketakst AS | Construction | 2012 |
| Fee Eiendom AS | Construction | 2021 |
| Ferda Caravan Service Fauske AS | Other services | 2025 |
| Ferstad Skoglund AS | Wholesale & retail | 2021 |
| Finneid Eiendom AS | Real estate | 2025 |
| Finneid Holding AS | Real estate | 1989 |
| Finneid Og Vatnbygda Utmarkslag SA | Real estate | 1998 |
| Finneid Sveis Eiendom AS | Manufacturing | 2019 |
| Finneid Sveiseverksted AS | Manufacturing | 2003 |
| First.Call AS | Administrative & support | 2023 |
| Fiske Norge Ans | Wholesale & retail | 2000 |
| Fjellbakk Holding AS | Financial services | 2005 |
| Fjellseth Invest AS | | 2024 |
| Fleksio AS | Wholesale & retail | 2026 |
| Flis Nord AS | Construction | 2024 |
| Flor Gartneri AS | Agriculture & fishing | 2021 |
| Focus Kafe AS | Hospitality | 2019 |
| Follaveien 39 AS | Real estate | 1996 |
| Follaveien 93 AS | Real estate | 2022 |
| Follaveien 93 Holding AS | Real estate | 2022 |
| Follaveien Eiendom AS | Real estate | 2019 |
| Forsbakk Gård Maskin AS | Agriculture & fishing | 2020 |
| Fotograf Holst AS | Professional & scientific | 1987 |
| Fredriksen-Holding AS | Wholesale & retail | 2019 |
| Frem Invest AS | Real estate | 2014 |
| Fridahl Eiendom AS | Real estate | 2013 |
| Fridahl Holding AS | Real estate | 1984 |
| Frisørloftet AS | Other services | 1997 |
| Frode M Invest AS | | 2024 |
| Fauske Rør A/S | Construction | 1988 |
| Gabrielsen Bygg AS | Real estate | 2007 |
| Gardsmoen Da | Agriculture & fishing | 2009 |
| Garstad Mat AS | Wholesale & retail | 2024 |
| Geo Salten AS | Professional & scientific | 2020 |
| Georg-Alfred AS | Hospitality | 2013 |
| GFN IP Og Eiendom AS | Real estate | 2026 |
| Gitte Dahl AS | Real estate | 2017 |
| GJ Gulstad Holding AS | Real estate | 2020 |
| Gjendahl Gårdsbruk Da | Agriculture & fishing | 2022 |
| Gjersvik Maskindrift AS | Construction | 2022 |
| GJR Invest AS | Real estate | 2020 |
| Glasscon Drift AS | Construction | 2022 |
| Glassgården AS | Real estate | 2014 |
| Go Accounting AS | Professional & scientific | 2024 |
| Granholm Tannlege & Invest AS | | 2007 |
| Granit Personalutleie Da | Administrative & support | 2012 |
| Graphic Growth AS | Information & communication | 2024 |
| Gravelars AS | Construction | 2021 |
| Grönli Watches AS | Manufacturing | 2021 |
| Grønnslettkonsernet Holding AS | Arts & recreation | 2014 |
| Grønt Fra Nord AS | Agriculture & fishing | 2021 |
| GSJ Invest AS | Health & social care | 2018 |
| Gulstad & Skånøy AS | Transport & logistics | 2026 |
| Gulstad AS | Transport & logistics | 2021 |
| Gundersen Byggservice AS | Construction | 1998 |
| Gurista Nuf | Administrative & support | 2023 |
| Haaland Glass Og Fasade AS | Manufacturing | 2020 |
| Haimen Da | Wholesale & retail | 2003 |
| Handelshuset Fauske AS | Wholesale & retail | 2019 |
| Haneseth VVS Salten AS | Construction | 2011 |
| Haugberg Eiendom AS | Real estate | 2005 |
| Haukland Bil & Transport AS | Transport & logistics | 2013 |
| Haukland Eiendom AS | Real estate | 2025 |
| Havnegården Fauske AS | Real estate | 2000 |
| Helhetlighelse AS | Health & social care | 2026 |
| Hermod Jensen Betongtransport AS | Transport & logistics | 2009 |
| Hevi Holding AS | Wholesale & retail | 2005 |
| Hjerteinord AS | Education | 2020 |
| Hmes Invest AS | Real estate | 2018 |
| Holgers Høner AS | Agriculture & fishing | 2023 |
| Holstad Produksjoner AS | Manufacturing | 2016 |
| Hoylaamo Vuorela | Wholesale & retail | 1999 |
| HR Invut AS | Real estate | 2021 |
| Huskies.No Da | Wholesale & retail | 2009 |
| Hypr- AS | Wholesale & retail | 2024 |
| Ico AS | Wholesale & retail | 2019 |
| Icu Holding AS | Professional & scientific | 2023 |
| Ide Møbler Fauske AS | Wholesale & retail | 2016 |
| Image Olsen AS | Wholesale & retail | 2016 |
| In Via Eiendom AS | Transport & logistics | 2018 |
| In Via Verksted AS | Other services | 2021 |
| Indre Salten Begravelsesbyrå | Other services | 2008 |
| Indre Salten Data AS | Wholesale & retail | 2020 |
| Indre Salten Energi AS | Energy | 2014 |
| Indre Salten Opplæringskontor AS | Education | 1996 |
| Indregård Holding AS | Real estate | 2019 |
| Industri Og Lastebillakkering AS | Real estate | 2003 |
| Industriveien 7 Fauske AS | Real estate | 2012 |