| Industri Invest Nord AS | Real estate | 2006 |
| Intersport Hammerfest AS | Wholesale & retail | 2001 |
| Io Konsulenten AS | Professional & scientific | 2023 |
| Iras Frisør AS | Other services | 2023 |
| Isbjørn Eiendom AS | Real estate | 2001 |
| Isbjørnhiet Barnehage SA | Education | 1992 |
| Ishavet Holding AS | | 2026 |
| Jan Kran AS | Transport & logistics | 2026 |
| Jao Kystfiske AS | Agriculture & fishing | 2023 |
| Jato Ans | Wholesale & retail | 2001 |
| Jensen Kystfiske AS | Agriculture & fishing | 2025 |
| Jensen Maskin Og Vedlikehold AS | Administrative & support | 2020 |
| JGM Holding AS | Financial services | 2014 |
| JJS Prosjektpartner AS | Administrative & support | 2007 |
| Johannessen Sjarkfiske AS | Agriculture & fishing | 2024 |
| Johansen TR AS | | 2023 |
| Jonassenfrisør AS | Other services | 2022 |
| Josefsen Kystfiske AS | Agriculture & fishing | 2026 |
| Julenissen Hammerfest AS | Wholesale & retail | 2018 |
| Jølstad Begravelsesbyrå - Hammerfest Begravelsesbyrå AS | Other services | 1987 |
| K.F Holding AS | Construction | 2016 |
| K.R Larsen Holding AS | Construction | 2025 |
| Kabimo AS | Real estate | 2001 |
| Kalm Holding AS | | 2023 |
| Karavai AS | Real estate | 2025 |
| Karigaskjøkken AS | Manufacturing | 2013 |
| Karmsund Nord AS | Administrative & support | 2025 |
| Karne AS | Professional & scientific | 2016 |
| Karne Holding AS | Professional & scientific | 2016 |
| Karoline Rodal AS | Wholesale & retail | 2023 |
| Kaspersen Fiske AS | Agriculture & fishing | 2021 |
| KBN Holding AS | | 2023 |
| Keb Bygg AS | Construction | 2026 |
| Kiropraktorsenteret I Hammerfest AS | Health & social care | 2023 |
| Kjetil Olsen Holding AS | Real estate | 2016 |
| Klemetstadveien 1 AS | Real estate | 2011 |
| Kleven Jakt Og Fiske AS | Wholesale & retail | 1991 |
| KM Eiendom Hammerfest AS | Real estate | 2010 |
| Kobe Eiendom AS | Real estate | 2020 |
| Komplett Regnskap Hammerfest AS | Professional & scientific | 1976 |
| Korsdalen Holding AS | Real estate | 2013 |
| Kotsu Kotsu AS | Hospitality | 2026 |
| Kransvikveien 6 AS | Real estate | 1980 |
| Krhd Holding AS | Construction | 2018 |
| Krigerfisk AS | Agriculture & fishing | 2018 |
| Krinvest Eiendom AS | Real estate | 2021 |
| Krinvest Holding AS | Health & social care | 2021 |
| Kristian Nordal Holding AS | Information & communication | 2024 |
| Krutthusgata Eiendom AS | Real estate | 2006 |
| KSM Eiendom AS | Real estate | 2018 |
| Kvaløy Kystfiske AS | Agriculture & fishing | 1998 |
| L.H Invest AS | Financial services | 2005 |
| Lege M. Sherif AS | Health & social care | 2020 |
| Lokalkapital AS | | 2020 |
| Ltst AS | Professional & scientific | 2015 |
| Lucerna AS | Energy | 2001 |
| Lunga Solutions AS | Wholesale & retail | 2015 |
| Lydens Glade Gutter AS | Arts & recreation | 2021 |
| Løkke Invest Holding AS | | 2026 |
| M. Dahl Fiskeri AS | Agriculture & fishing | 2024 |
| M. Sherif Eiendom AS | Real estate | 2025 |
| M. Sherif Investment AS | | 2025 |
| M.Sherif Holding AS | | 2025 |
| M/K Bjørnson AS | Agriculture & fishing | 2006 |
| Ma-Bu Holding AS | Construction | 2012 |
| Malerinna Eirin AS | Construction | 2018 |
| Marchuk AS | Hospitality | 2026 |
| Martine Langseth Eiendom AS | Real estate | 2023 |
| Martine Langseth Holding AS | Other services | 2023 |
| Matech AS | Professional & scientific | 1990 |
| Mer Byggtjenester AS | Construction | 2022 |
| Meridian Eiendomsutvikling AS | Real estate | 2007 |
| Meridiangt 2 AS | Real estate | 1999 |
| Mester Nord AS | Professional & scientific | 2014 |
| Meyer Kystfiske AS | Agriculture & fishing | 2011 |
| Mikalsen-Invest AS | Wholesale & retail | 2010 |
| Mikkelgammen AS | Arts & recreation | 1997 |
| Minato Consulting AS | Professional & scientific | 2026 |
| MK Tømrerservice Da | Construction | 2025 |
| MR Jensen Holding AS | Real estate | 2020 |
| Multiventures AS | Information & communication | 2025 |
| Murmesteren Hammerfest AS | Construction | 2016 |
| Mølmann Holding AS | Real estate | 2005 |
| Nissen Hammerfest Senter AS | Real estate | 1982 |
| No 19 Hammerfest AS | Wholesale & retail | 2009 |
| Nok Thaimat AS | Hospitality | 2026 |
| Nord Trans International AS | Transport & logistics | 2022 |
| Nord Vest Øst AS | Real estate | 2026 |
| Nord-Tekk AS | | 2022 |
| Nordegga AS | Professional & scientific | 2011 |
| Nordiskberedskap AS | Information & communication | 2024 |
| Norheim Invest AS | Real estate | 2020 |
| Norn Eiendom AS | Real estate | 2025 |
| North Sea View AS | Hospitality | 2022 |
| North Tech AS | Other services | 2016 |
| North Tech Eiendom AS | Real estate | 2023 |
| North Tech Finnmarksveien AS | Real estate | 2018 |
| North Tech Strandgata AS | Real estate | 2016 |
| North Tech Svartfjellveien 2 AS | Real estate | 2022 |
| North Tech Svartfjellveien AS | Real estate | 2011 |