| Cloudjs AS | Information & communication | 2012 |
| Cmoment AS | Real estate | 2024 |
| Cobee Brumunddal AS | Hospitality | 2023 |
| Coegi AS | Professional & scientific | 2021 |
| Cottoncandy AS | Wholesale & retail | 2024 |
| Count Holding AS | Real estate | 2005 |
| Cut'N Go Brumunddal AS | Other services | 2022 |
| Cydef AS | Information & communication | 2018 |
| D. Løberg Holding AS | Real estate | 2020 |
| Dag Campbell Pedersen AS | Financial services | 2005 |
| Dagestad Eiendom AS | Real estate | 2005 |
| Dagestad Gruppen AS | Manufacturing | 2021 |
| Dagestad Mekaniske Verksted AS | Manufacturing | 1994 |
| Dagfinrud Skytterklær AS | Real estate | 2005 |
| Dahlen Kompetanse AS | Education | 2023 |
| Dala Fysioterapi & Løpsklinikk Ans | Health & social care | 2019 |
| Dala Garn AS | Wholesale & retail | 2024 |
| Dala Interiør AS | Wholesale & retail | 2001 |
| Dala Vital AS | Wholesale & retail | 2023 |
| Dala Økonomi AS | Professional & scientific | 2003 |
| Dam, Vann Og Veg AS | Professional & scientific | 2022 |
| Dark Fiber Group AS | | 2021 |
| Dark Fiber Group Manco AS | | 2026 |
| DB Snekker Og Maler AS | Construction | 2022 |
| DBF AS | Professional & scientific | 2000 |
| DDN Norge AS | Real estate | 2021 |
| Dekagon AS | Construction | 2023 |
| Dekklåven AS | Other services | 2008 |
| Design Og Produksjon Innlandet AS | Professional & scientific | 2023 |
| Designbygg AS | Construction | 2017 |
| Det Italienske Hjørnet Da | Wholesale & retail | 1995 |
| Det Lille Ekstra - Brumunddal AS | Professional & scientific | 2013 |
| Digital Meadows Game Studio Da | Information & communication | 2023 |
| Din Blikkenslager AS | Construction | 2025 |
| Din Eiendom 1 AS | Construction | 2012 |
| Din Frisør Brumunddal AS | Other services | 2022 |
| Din Trafikkskole Da | Education | 1997 |
| Ditt Garn AS | | 2019 |
| Dn-Huset AS | Real estate | 2014 |
| Dobloug Maskin AS | Construction | 2016 |
| Dobloug Utleie AS | Administrative & support | 2021 |
| Dobloug Utvikling AS | Real estate | 2016 |
| Doblykken Holding AS | | 2024 |
| Dobosz Bygg AS | Construction | 2023 |
| Doktorgården Naprapati & Massasje AS | Health & social care | 2015 |
| Drivetech AS | Wholesale & retail | 2025 |
| Dsrf AS | Health & social care | 2020 |
| Duenger Invest AS | | 2022 |
| Dufla Holding AS | Construction | 2024 |
| Dukeheim Holding AS | Professional & scientific | 2019 |
| DV Eiendom AS | Financial services | 2005 |
| Doktorgården AS | Real estate | 1988 |
| Ef Entreprenør AS | Construction | 2023 |
| Eidsiva Tre AS | Real estate | 2005 |
| Eiendomsservice Øst AS | Construction | 2023 |
| Eier Eiendom AS | Real estate | 2023 |
| Eila Invest AS | Real estate | 2020 |
| Eimo Invest AS | | 2024 |
| Einar Dobloug AS | Financial services | 2005 |
| Eingro AS | Administrative & support | 2023 |
| Eingro Holding AS | Administrative & support | 2023 |
| Ekte Treningsglede AS | Arts & recreation | 2015 |
| El-M AS | Construction | 2017 |
| Elektromedisinsk Service AS | Manufacturing | 2001 |
| Eler AS | Real estate | 2020 |
| Eltera Ringsaker AS | Construction | 2013 |
| Emgani AS | Real estate | 2016 |
| Emil Holding AS | | 2024 |
| Emilie Og Henriks Holdingselskap AS | Construction | 2024 |
| Energima Ing. Oh AS | Construction | 1994 |
| Engeli Invest AS | Real estate | 2005 |
| Engelifeltet AS | Real estate | 2008 |
| Engers Pall AS | Wholesale & retail | 2007 |
| Enter Bolig AS | Real estate | 2016 |
| Eon Øko AS | Wholesale & retail | 2025 |
| Esa-Holding AS | Construction | 2014 |
| Esponor Da | Wholesale & retail | 2006 |
| Eterma AS | Other services | 2025 |
| Etg AS | Arts & recreation | 2011 |
| Euler Holding AS | | 2024 |
| Europagruppen AS | Real estate | 2002 |
| Evenstad Eiendom AS | Real estate | 2016 |
| Eventyrlig Utleie AS | Real estate | 2016 |
| Evoltica AS | Wholesale & retail | 2022 |
| Fabrikken Eiendom Brumunddal AS | Real estate | 2006 |
| Fagbygg Innlandet AS | Construction | 2025 |
| Fangbergsvegen AS | Real estate | 2021 |
| FDD Store AS | Wholesale & retail | 2024 |
| Feb Holding AS | Administrative & support | 2005 |
| Feilfri AS | Construction | 2019 |
| Fellesskapt AS | Professional & scientific | 2021 |
| Ferskvann AS | Real estate | 2017 |
| Fivei Games AS | Information & communication | 2023 |
| Fjords AS | Information & communication | 2014 |
| FK Solheim Holding AS | | 2023 |
| Flatenga 19 AS | Real estate | 2023 |
| Flatt Jern AS | Real estate | 2007 |
| Flis Og Fjell AS | Construction | 2020 |
| Floor Factory Holding AS | Wholesale & retail | 2015 |
| FMK Bygg Og Eiendom AS | Construction | 2012 |