| A Holstad Produkter Da | Wholesale & retail | 1997 |
| A.Seljeås AS | Administrative & support | 2025 |
| A/S Edvardsen Eiendom | Construction | 1988 |
| Acustus Eiendom Fauske AS | Real estate | 2010 |
| Acutula AS | Professional & scientific | 1996 |
| Adismo AS | Real estate | 2023 |
| Advokat Sigurd a Refvik Eiendom AS | Real estate | 1997 |
| Advokat Øystein Hansen AS | Professional & scientific | 2014 |
| Advokatfirmaet Holst Stifjell AS | Professional & scientific | 2007 |
| Aktiv Fauske AS | Arts & recreation | 2011 |
| Allied Engineering AS | Manufacturing | 2020 |
| Alltrans AS | Transport & logistics | 2021 |
| Alta Skiferlegging Nord AS | Construction | 2007 |
| Ankerske Naturstein Eiendom AS | Real estate | 2013 |
| Anlegg Og Maskinutstyr AS | Wholesale & retail | 2014 |
| Annabrygga AS | | 2008 |
| Apta AS | Real estate | 2018 |
| Arctic Cabins AS | Hospitality | 2014 |
| Arctic Energy Systems AS | Professional & scientific | 2019 |
| Arctic Fortune AS | Financial services | 2020 |
| Arctic Sales & Supply AS | Wholesale & retail | 2026 |
| Arkana Design AS | Manufacturing | 2007 |
| Arkimedes Adventure AS | Administrative & support | 2024 |
| Arkimedes Eiendom AS | Real estate | 2023 |
| Arkimedes Invest AS | Real estate | 2019 |
| AS Poul | Construction | 2012 |
| AS Stillas Og Betongservice | Wholesale & retail | 1990 |
| Asia Butikk AS | Wholesale & retail | 2015 |
| Autotrader Nord AS | Wholesale & retail | 2022 |
| B4 Bygg AS | Construction | 2021 |
| B4 Bygg Bolig AS | Real estate | 2022 |
| B4 Holding AS | Construction | 2021 |
| Barkhald & Pedersen Trafikkskole AS | Education | 1995 |
| Barstrand AS | Construction | 2012 |
| Be-Mo AS | Construction | 2005 |
| Beauty Bar by Tanya AS | Wholesale & retail | 2024 |
| Betong & Anlegg Entreprenør AS | Construction | 2025 |
| Bilkem Mat AS | Hospitality | 2013 |
| Bit Maskin AS | Construction | 2005 |
| BJ Invest AS | Agriculture & fishing | 2004 |
| Blacksmith Co AS | Agriculture & fishing | 2015 |
| Bluebite GmbH | Information & communication | 2019 |
| Bluesmobil AS | Other services | 1994 |
| Blutech AS | Professional & scientific | 2024 |
| Bobil & Caravan Fauske AS | Wholesale & retail | 2025 |
| Bobil Eiendom Fauske AS | Real estate | 2017 |
| Body and Soul Webshop Da | Wholesale & retail | 2006 |
| Brannsikring Nord AS | Construction | 2005 |
| Breimo AS | | 2021 |
| Brekkes Gummiservice AS | Other services | 2021 |
| Bringsli Eiendom AS | Real estate | 2014 |
| Brygga Legekontor Fauske AS | Health & social care | 2019 |
| Brødr Palmesen Ans | Construction | 1980 |
| Brødrene Kristensen | Real estate | 1926 |
| Brøyt Fauske AS | Administrative & support | 2023 |
| BSD Holding AS | Administrative & support | 2021 |
| Bygg Team Fauske AS | Construction | 2008 |
| Byggmester O.J Wenberg AS | Construction | 2019 |
| Byggmester Sten Andersen AS | Construction | 1983 |
| Bådsvika Service AS | Construction | 2025 |
| Camilla Eriksson AS | Education | 2022 |
| Can Can Fauske AS | Wholesale & retail | 2014 |
| Cberntzen Holding AS | Professional & scientific | 2026 |
| Chris Garstad Holding AS | Real estate | 2005 |
| CJB Regnskap AS | Professional & scientific | 2017 |
| D.Kt Abrahamsen AS | Wholesale & retail | 2014 |
| Daja Eiendom AS | Arts & recreation | 2015 |
| Dattera AS | Real estate | 2013 |
| DDT Construct Holding AS | | 2023 |
| Der Invest AS | Real estate | 2020 |
| Dine Føtter Fauske AS | Other services | 2012 |
| Dybvik Eiendom AS | Real estate | 2024 |
| Ebbe Nord AS | Real estate | 2012 |
| Ebbe Rørservice AS | Construction | 2009 |
| Econsult AS | Information & communication | 2014 |
| Edifia Games AS | Information & communication | 2025 |
| Einar Pedersen AS | Real estate | 1975 |
| Elektrosenteret AS | Wholesale & retail | 1989 |
| Elkjøp Fauske AS | Wholesale & retail | 2012 |
| Enoksen Blix Holding AS | Construction | 2025 |
| Epas Varehus AS | Wholesale & retail | 1983 |
| Eriksen Buss & Maskin in Via AS | Transport & logistics | 2016 |
| Exim AS | Wholesale & retail | 1985 |
| Exim Eiendom AS | Real estate | 2023 |
| Exim Holding AS | Real estate | 2005 |
| Fagerthun Events AS | Professional & scientific | 2012 |
| Faro Holding AS | Wholesale & retail | 2005 |
| Fauske Bedehus AS | Wholesale & retail | 2016 |
| Fauske Bilistsenter AS | Wholesale & retail | 2015 |
| Fauske Camping AS | Hospitality | 2003 |
| Fauske Elektro AS | Construction | 1990 |
| Fauske Gartneri AS | Agriculture & fishing | 2013 |
| Fauske Gartneri Eiendom AS | Real estate | 2012 |
| Fauske Glass AS | Manufacturing | 2020 |
| Fauske Hotell AS | Hospitality | 2015 |
| Fauske Idrettsbarnehage AS | Education | 2009 |
| Fauske Industripark AS | Real estate | 2021 |
| Fauske Jernbanekafe Takeoverco AS | Hospitality | 2014 |
| Fauske Naprapatklinikk AS | Health & social care | 2016 |
| Fauske Rengjøring AS | Administrative & support | 1998 |