| Elmako AS | Health & social care | 2025 |
| Elsikkerhet Nord AS | Construction | 2009 |
| Eltro Eiendom AS | Real estate | 2011 |
| Eltro Holding AS | Construction | 2011 |
| Eltro Installasjon AS | Construction | 2011 |
| Eltro Utvikling AS | Real estate | 2019 |
| Eltro VVS AS | Construction | 2020 |
| Elvebredden 37 AS | Real estate | 2016 |
| Elveland Boligpark AS | Real estate | 2009 |
| Ema Kombidrift AS | Wholesale & retail | 2018 |
| Emedic AS | Information & communication | 2023 |
| Emilie R AS | Other services | 2014 |
| Emilija Skarnulyte | Arts & recreation | 2013 |
| Emlav AS | | 2025 |
| Emmas Drift AS | Hospitality | 2019 |
| Emmas Eftf. AS | Hospitality | 2025 |
| Emmas Holding AS | Real estate | 2005 |
| Empowered AS | Professional & scientific | 2013 |
| Ems Consult AS | Real estate | 2005 |
| En Snekker AS | Construction | 2012 |
| En Type AS | Manufacturing | 1996 |
| En-Til-En Media AS | Information & communication | 2019 |
| Enersync AS | Professional & scientific | 2026 |
| Engen Entreprenør AS | Construction | 2014 |
| Engen Nord AS | Construction | 2022 |
| Enh Prosjekt AS | Real estate | 2013 |
| Enigma Eiendom AS | Real estate | 2022 |
| Enjoy the Arctic AS | Administrative & support | 2023 |
| Enter Tromsø Hotels & Apartments AS | Hospitality | 2000 |
| Envie Holding AS | | 2025 |
| Era - Prosjekter AS | Professional & scientific | 2018 |
| Eras-Holding AS | Professional & scientific | 2018 |
| Erdahl Design AS | Professional & scientific | 2025 |
| Eriksens Consulting AS | Information & communication | 2021 |
| Erling Hansen Eiendom AS | Real estate | 2006 |
| Esm Eiendom AS | Real estate | 2016 |
| Espejord AS | Information & communication | 2025 |
| Espejord Invest AS | Real estate | 2018 |
| Espen Askeladd AS | Financial services | 2015 |
| Espen Holst Hansen Holding AS | | 2022 |
| Espen Johansen Trafikkskole AS | Education | 2018 |
| Espina AS | | 2024 |
| Essens Holding AS | Real estate | 2016 |
| Essens Vigdis Dagspa AS | Other services | 2017 |
| Estam AS | Professional & scientific | 2018 |
| Esthix AS | Other services | 2018 |
| Eston AS | Construction | 2019 |
| Et Hjem Holding AS | Administrative & support | 2012 |
| Etak AS | Real estate | 2015 |
| Etrade Arctic AS | Financial services | 1998 |
| Eugenie Degan AS | Other services | 2024 |
| Eventify AS | Administrative & support | 2023 |
| Evertsen Holding AS | Real estate | 2017 |
| Evjenvegen 76 AS | Real estate | 2021 |
| Evoc AS | Real estate | 2018 |
| Evonax Holding AS | | 2026 |
| Evtu AS | Professional & scientific | 2021 |
| Evtu Eiendom AS | Real estate | 2025 |
| Excitus Medical AS | Professional & scientific | 2014 |
| Exclusive Travel Experiences AS | Administrative & support | 2021 |
| Exer Invest AS | Arts & recreation | 2019 |
| Exit Consulting AS | Professional & scientific | 2026 |
| Explore Tromsø AS | Arts & recreation | 2013 |
| Extra Isrenna AS | Wholesale & retail | 2026 |
| Extra Leker Tromsø AS | Wholesale & retail | 2003 |
| Eyesigth Norway AS | Financial services | 2015 |
| Erling Hansen A/S | Construction | 1987 |
| F Invest AS | | 2022 |
| F. Landmark Holding AS | Real estate | 2008 |
| Fabelfjord AS | Information & communication | 2013 |
| Fabrikken Idrett Og Trening 24 AS | Education | 2018 |
| Fagdykk AS | Construction | 2008 |
| Fagerheim Management AS | Professional & scientific | 2002 |
| Falcon Holding AS | | 2025 |
| Fan AS | Administrative & support | 2025 |
| Fap Holding AS | | 2025 |
| Farout AS | Arts & recreation | 2007 |
| Fasasona AS | Information & communication | 2021 |
| Fast Hjelp AS | Administrative & support | 2016 |
| Fastburger AS | Hospitality | 2025 |
| Fastlege Fredrik Fredriksen AS | Health & social care | 2016 |
| Fastmed Innovation Da | Administrative & support | 2002 |
| Favn Forsikring | Financial services | 1963 |
| FBK Holding AS | Professional & scientific | 2021 |
| Fedde AS | | 2026 |
| Feedbackmetrics AS | Information & communication | 2009 |
| Feelhome Eiendom AS | Real estate | 2022 |
| Feionor Ans | Wholesale & retail | 1995 |
| Fella Holding AS | | 2026 |
| Ferdasyn Holding AS | | 2022 |
| Fette Reint AS | Professional & scientific | 2020 |
| Fetter Reint AS | Wholesale & retail | 2021 |
| Fiberfish AS | Manufacturing | 2019 |
| Fibergutta AS | Construction | 2023 |
| Figenschau Holding AS | Professional & scientific | 2016 |
| Figenum AS | | 2026 |
| Figenum Forvaltning AS | | 2026 |
| Filmreaktor Nord AS | Information & communication | 2024 |
| Fin AS | Other services | 2025 |
| Finansmodell 1 AS | Information & communication | 2023 |