| Duttestien Familiebarnehage AS | Education | 2006 |
| DWH Holding AS | | 2022 |
| Dynara AS | | 2025 |
| Dynavec AS | Manufacturing | 2007 |
| E. Helgesen Eiendom 1 AS | Real estate | 2018 |
| E. Helgesen Eiendom 2 AS | Real estate | 2018 |
| E. Helgesen Invest AS | Real estate | 2005 |
| E.A. Smith AS | Wholesale & retail | 1914 |
| E.A. Smith Melhus Eiendom AS | Real estate | 2021 |
| E.A. Smith Stokmarknes Eiendom AS | Real estate | 2017 |
| Eas 1869 AS | Wholesale & retail | 2020 |
| Eas Investments AS | Financial services | 2013 |
| Ebs Holding AS | | 2017 |
| Eco Service AS | Administrative & support | 2015 |
| Efarma AS | Wholesale & retail | 2016 |
| Eidsøra Betong AS | Manufacturing | 2024 |
| Eidsøra Eiendom AS | Real estate | 2023 |
| Eie Bygg & Eiendom AS | Real estate | 2016 |
| Eie Bygg Holding AS | Construction | 2024 |
| Eie Bygg Utvikling AS | Construction | 2025 |
| Eiendom Euroasia AS | Real estate | 2011 |
| Eiendomskonsulent AS | Professional & scientific | 1988 |
| Eken Iglo AS | Real estate | 2022 |
| Eku AS | | 2025 |
| Elgesetergt. 47 AS | Real estate | 2006 |
| Eli & Cappelen Fuglehunder Da | Other services | 2021 |
| Elite Esthetic AS | Other services | 2023 |
| Elite Esthetic Trondheim AS | Other services | 2026 |
| Ellas Vask AS | Administrative & support | 2017 |
| Elveseter Begravelsesbyrå AS | Other services | 2004 |
| Elveseter Eiendom Holding AS | Real estate | 2023 |
| Emil Svendsen Holding AS | Wholesale & retail | 2018 |
| Emmi Development AS | Hospitality | 2023 |
| Emuna Media AS | Information & communication | 2017 |
| Emvi Holding AS | | 2023 |
| Encube Data Ans | Wholesale & retail | 1997 |
| Engen Fremtid AS | | 2024 |
| Enimo Holding AS | | 2026 |
| Ernelin Services AS | Transport & logistics | 2016 |
| Erso Holding AS | | 2013 |
| Ervik Kloakklag | Water & waste | 1982 |
| Es&Ss Eiendom AS | Real estate | 2019 |
| Eso Invest AS | | 2015 |
| Etams Minde Holding AS | | 2026 |
| Etat Bolig AS | Real estate | 2010 |
| Etat Eiendom AS | Real estate | 2010 |
| Euroasia AS | Wholesale & retail | 2009 |
| Evident Heimdal AS | Health & social care | 2022 |
| Evo Eiendom AS | Real estate | 2017 |
| Evo Entreprenør AS | Construction | 2017 |
| Exmarte AS | Manufacturing | 2020 |
| F.A Håndtverkerservice AS | Construction | 2025 |
| Facelounge AS | Other services | 2021 |
| Fagerli Helse- Og Kiropraktortjenester AS | Health & social care | 2019 |
| Fairytale Eiendom AS | Real estate | 2012 |
| Falkmo Eiendom AS | Real estate | 2020 |
| Falkmo Holding AS | Hospitality | 2021 |
| Fallrø Eiendom AS | Real estate | 1997 |
| Fallrø Elektro AS | Construction | 1996 |
| Fallrø Holding AS | Construction | 2005 |
| Falm AS | Real estate | 2019 |
| Family Hua AS | Real estate | 1994 |
| Family Market AS | Wholesale & retail | 2018 |
| Family Market Import AS | Wholesale & retail | 2023 |
| Fantasy Factory AS | Other services | 2013 |
| Fariba AS | Real estate | 2012 |
| Fellini Restaurante Pizzeria AS | Hospitality | 1991 |
| Ferjemannsveien 4 AS | Real estate | 2024 |
| Ferrozink Trondheim AS | Manufacturing | 2007 |
| FFG Invest AS | | 2020 |
| Fidy Holding AS | | 2020 |
| Fiin Frisører AS | Other services | 2011 |
| Fiskhandler'N Heimdal AS | Wholesale & retail | 2014 |
| Fix Elektro AS | Construction | 2025 |
| Fjordgata 22 AS | Real estate | 2001 |
| Flatåsen Nordre AS | Real estate | 2017 |
| Flying Foil AS | Professional & scientific | 2018 |
| Flønes Eiendom & Invest AS | Real estate | 2000 |
| Fobello AS | Wholesale & retail | 2004 |
| Foinvest AS | | 2005 |
| Fokserød Investeringsselskap AS | Real estate | 2013 |
| Folde Regnskap Og Rådgivning AS | Professional & scientific | 2025 |
| Forssén Holding AS | Construction | 2023 |
| Fossegrenda 32-34 AS | Real estate | 2019 |
| Fossegrenda 7 AS | Real estate | 2017 |
| Fosseide Transmek AS | Manufacturing | 2023 |
| Frateco Invest AS | | 2014 |
| Fremo Næringspark AS | Real estate | 2017 |
| Fremstad & Rokseth AS | Construction | 1975 |
| Frengen Maskin AS | Wholesale & retail | 2025 |
| Frisk Eiendom AS | Agriculture & fishing | 1999 |
| Frisk Medisinske Treningssenter AS | Arts & recreation | 2008 |
| FRK Wickstrøm AS | Wholesale & retail | 2006 |
| Frode Andersen Holding AS | Financial services | 2005 |
| FSL Betongteknikk AS | Construction | 2026 |
| Full Rulle Orkester Ans | Arts & recreation | 2002 |
| Ga Hansen Invest AS | | 2023 |
| Galleri Skavlan AS | Arts & recreation | 2025 |
| Gamle Åsveg 32 AS | Real estate | 2021 |
| Garberg Bygg AS | Construction | 2023 |