| Dialecta Kommunikasjon AS | Professional & scientific | 1985 |
| Diger AS | Wholesale & retail | 2016 |
| Digital Agreements AS | Information & communication | 2020 |
| Digitala AS | Information & communication | 2020 |
| Din Beste Helse AS | Health & social care | 2021 |
| Dinner 68 AS | Hospitality | 2010 |
| Discover Norway AS | Administrative & support | 1997 |
| Disheim AS | Education | 2004 |
| Ditløvsen Tømrer,Rør&Sveis AS | Construction | 2026 |
| Diu Terminus AS | Financial services | 2014 |
| Djupvik AS | Wholesale & retail | 2008 |
| Djupvik Holding AS | Wholesale & retail | 2005 |
| Dokken & Moen Murmesterforretning AS | Construction | 2020 |
| Dolva Eiendom AS | Real estate | 2020 |
| Dolva Holding AS | | 2020 |
| Dolvin AS | Wholesale & retail | 2005 |
| Dolvin Eiendom Holding AS | Real estate | 2014 |
| Don Naipe AS | Information & communication | 2017 |
| Double M Holding AS | | 2025 |
| DP Lillehammer AS | Hospitality | 2022 |
| DR. Gonet Aesthetics AS | Health & social care | 2025 |
| DR. Gonet Legekontor AS | Health & social care | 2021 |
| Dragon Claw AS | | 2025 |
| DS Bil AS | Other services | 2014 |
| Duedahl Holding AS | Wholesale & retail | 2023 |
| Dufseth Invest AS | Other services | 2005 |
| Dukefoss Capital AS | Real estate | 2016 |
| Dulven Holding AS | | 2016 |
| Dumbo Holding AS | | 2024 |
| E-T Invest AS | | 2018 |
| E.S Transport AS | Transport & logistics | 2004 |
| Easy AI AS | Information & communication | 2023 |
| Easy Track AS | Information & communication | 2025 |
| Eb Utvikling AS | Real estate | 2015 |
| Ebl Holding AS | Professional & scientific | 2013 |
| Ecit Lillehammer AS | Professional & scientific | 2015 |
| Ecommerce Ventures AS | Information & communication | 2022 |
| Ecpay AS | Administrative & support | 2005 |
| Eds Bygg AS | Construction | 2022 |
| Ee-Teknikk AS | Construction | 1989 |
| Ees Holding AS | | 2022 |
| Efaktor AS | Information & communication | 2007 |
| Efaktor Norge AS | Information & communication | 2026 |
| Efam Holding AS | | 2026 |
| Egon Lillehammer AS | Hospitality | 1994 |
| Ei-Na Holding AS | Real estate | 2005 |
| Eide Pedersen Holding AS | | 2021 |
| Eido AS | Real estate | 2013 |
| Eidsiva Consulting AS | Professional & scientific | 2003 |
| Eidsiva Digital AS | Information & communication | 1998 |
| Eidsiva Fiberinvest AS | Information & communication | 2017 |
| Eiendom Innlandet AS | Real estate | 2019 |
| Eiendomsmegler 1 Lillehammer Og Gudbrandsdal AS | Real estate | 1999 |
| Eiendomsutvikling Innlandet AS | Real estate | 2011 |
| Eilertsen Og Eldevik Bok Og Musikk Da | Information & communication | 2000 |
| Eimaro AS | | 2022 |
| Einar Andreas Skjellerudsveen | Agriculture & fishing | 2013 |
| Einar Tvete AS | Real estate | 2005 |
| Eir Nordic AS | Wholesale & retail | 2026 |
| Eirenes Holding AS | | 2015 |
| Ekilibre AS | Arts & recreation | 2016 |
| Ekre Byggservice AS | Construction | 2020 |
| Ekrem Servicetjenester AS | Administrative & support | 2017 |
| Ekrom Management AS | Professional & scientific | 2013 |
| Ekromskogen Huseierlag SA | Other services | 1975 |
| El Gringo Holding AS | Professional & scientific | 2021 |
| El-Installasjon Innlandet AS | Construction | 2022 |
| Elektromontørenes Fagforening Eiendom AS | Real estate | 2002 |
| Elektrosafe AS | Construction | 2016 |
| Elesco Innlandet AS | Other services | 2012 |
| Elkjærtun AS | | 2024 |
| Elle Melle Ting AS | Wholesale & retail | 2021 |
| Elma Holding AS | Real estate | 2005 |
| Elt Holding AS | | 2021 |
| Eltera Lillehammer AS | Construction | 2005 |
| Elve Holding AS | Construction | 2021 |
| Elveseter Holding AS | Hospitality | 2005 |
| Elvin Bugge AS | Professional & scientific | 2012 |
| Emco Invest AS | Real estate | 2005 |
| Eminent Eiendomsmegling Lillehammer AS | Real estate | 2005 |
| En Nasjon I Sjakk AS | Information & communication | 2024 |
| Endrestad Holding AS | | 2025 |
| Enger Skogsdrift SA | Other services | 2006 |
| Engesvea Fus Barnehage AS | Education | 2019 |
| Ep Invest AS | Administrative & support | 2021 |
| Ep Service AS | Construction | 2023 |
| Epgjest Holding AS | | 2024 |
| Erik Alver Holding AS | Financial services | 2017 |
| Eriksens Holding AS | Construction | 2026 |
| Erling Tvete AS | Financial services | 2005 |
| Ersgaard AS | Real estate | 2018 |
| Ersgaard Bolig AS | Real estate | 2014 |
| Ersgaard Bolig III AS | Real estate | 2018 |
| Ersgaard Eiendom AS | Real estate | 2006 |
| Ersgaard Einar Sandbergs Veg AS | Real estate | 2018 |
| Ersgaard Fagernes AS | Real estate | 2022 |
| Ersgaard Framnes AS | Real estate | 2020 |
| Ersgaard Fritid AS | Real estate | 2018 |
| Ersgaard Hafjell AS | Real estate | 2021 |
| Ersgaard Hammerseng AS | Real estate | 2014 |