| Einar Engvig AS | Wholesale & retail | 1995 |
| Einar R Holm AS | Transport & logistics | 1999 |
| Einnesvegen 1 AS | Wholesale & retail | 2012 |
| Eivind Aakenes Holding AS | Health & social care | 2021 |
| Eka AS | Real estate | 2000 |
| Ekspress Transport 1 AS | Transport & logistics | 2026 |
| Electro Team AS | Construction | 2015 |
| Elektroservice Kristiansund AS | Construction | 1994 |
| Elkjøp Kristiansund AS | Wholesale & retail | 2024 |
| ELLINGS1 Holding AS | | 2019 |
| ELLINGS1 Invest AS | | 2025 |
| Elmat AS | Energy | 1996 |
| Elvebakken 1-3 AS | Real estate | 2019 |
| Emax AS | | 2021 |
| Embla AS | Information & communication | 1991 |
| Empet Kristiansund AS | Professional & scientific | 2020 |
| Empro AS | Wholesale & retail | 2000 |
| Empros Eiendom AS | Real estate | 2006 |
| Enav AS | Information & communication | 2015 |
| Energi Centeret AS | Wholesale & retail | 2024 |
| Engdahl AS | Professional & scientific | 2005 |
| Engdahl Assuranse A/S | Professional & scientific | 1988 |
| Engeli Johansen Invest AS | | 2025 |
| Engelijohansen AS | Administrative & support | 2022 |
| Engvig Eiendom Ans | Wholesale & retail | 1925 |
| Engvig Eiendom AS | Wholesale & retail | 2013 |
| Engvig Holding AS | Wholesale & retail | 2005 |
| Engvikklinikken AS | Health & social care | 2026 |
| Eob AS | Professional & scientific | 2023 |
| Ep Holding AS | Real estate | 2005 |
| Epås Drift Ans | Real estate | 2004 |
| Erak AS | Real estate | 2013 |
| Erb Invest AS | | 2021 |
| Erik Kokk AS | | 2019 |
| Erik Ohr Eiendom AS | Real estate | 2021 |
| Erik Ohr Eiendom Holding AS | | 2021 |
| Eris Eiendom AS | Real estate | 2017 |
| Erling Winje AS | Wholesale & retail | 1999 |
| Esea Submarine AS | Professional & scientific | 2016 |
| Espvik Taxi AS | Transport & logistics | 2024 |
| Estbygg AS | Construction | 2014 |
| Etti Holding AS | | 2026 |
| EV1 Invest AS | | 2022 |
| Express Pizza AS | Hospitality | 1996 |
| F Strømme Holding AS | | 2022 |
| F23 Eiendom AS | Real estate | 2008 |
| Fager Holding AS | Professional & scientific | 2013 |
| Faksco Invest AS | Wholesale & retail | 2017 |
| Faksvåg AS | Real estate | 2005 |
| Faktisk AS | Real estate | 2012 |
| Farad AS | Real estate | 1976 |
| Fargeverket AS | Arts & recreation | 2022 |
| Faro Invest AS | Financial services | 2014 |
| Farovital AS | Wholesale & retail | 2026 |
| Fasiten Holding AS | | 2024 |
| Favoritt Pizza Og Grill AS | Hospitality | 2019 |
| FB Kapital AS | | 2026 |
| Felagi Tekstiltrykk AS | Manufacturing | 2016 |
| Fenix Norge AS | Wholesale & retail | 2020 |
| Festspillene I Kristiansund AS | Arts & recreation | 2018 |
| FG Eiendom 23 AS | Real estate | 2008 |
| FG Eiendom 24 AS | Real estate | 2008 |
| Fgpartner Økonomiforvaltning AS | Professional & scientific | 2016 |
| Fiind AS | Information & communication | 2025 |
| Filterspesialisten Da | Wholesale & retail | 1992 |
| Finansgruppen Bolig AS | Real estate | 2018 |
| Finansgruppen Eiendom AS | Real estate | 2013 |
| Finansgruppen Prosjekt AS | Real estate | 1998 |
| Finansgruppen Utbygging AS | Real estate | 2008 |
| Finn Thordarson AS | | 2022 |
| Fire Smaker Cafe/Restaurant AS | Hospitality | 2026 |
| Fireto AS | | 1999 |
| Fishanbua AS | Hospitality | 2019 |
| Fiskebua AS | Wholesale & retail | 2026 |
| Fiskergata 18 AS | Real estate | 2020 |
| Fitnesspoint Kristiansund Treningssenter AS | Arts & recreation | 2016 |
| Fjellheimen Elektro AS | Professional & scientific | 2009 |
| Fjorda AS | Wholesale & retail | 2022 |
| Fjordvang Holding AS | | 2023 |
| Fladseth Holding AS | Real estate | 2005 |
| Fladvad Holding AS | Real estate | 2022 |
| Flatsetsund Engineering AS | Manufacturing | 2001 |
| Flemmen Holding AS | Financial services | 2005 |
| Float Port AS | Professional & scientific | 2019 |
| Flåklypa Mekaniske AS | Arts & recreation | 2023 |
| Fløya Barnepark Ans | Health & social care | 1991 |
| FM Midt AS | Real estate | 2023 |
| Folkets Hus Kristiansund SA | Real estate | 1950 |
| Fortuna Oils AS | Manufacturing | 2004 |
| Fosna Eiendom AS | Real estate | 1991 |
| Fosna Energy AS | Professional & scientific | 2003 |
| Fosna Forvaltning AS | Professional & scientific | 1999 |
| Fosna Fysikalske Institutt AS | Health & social care | 1985 |
| Fosna Holding AS | Real estate | 2017 |
| Fosna Hotell AS | Hospitality | 2017 |
| Fosna Opplevelser AS | Administrative & support | 2018 |
| Fosna Regnskap AS | Professional & scientific | 2011 |
| Fosna Stein AS | Construction | 2025 |
| Fosna VVS AS | Construction | 2024 |
| Fosnagata 11 AS | Real estate | 2009 |