| Eiger Corporate AS | Professional & scientific | 2006 |
| Eight Holding AS | | 2025 |
| Eigir Utvikling AS | Real estate | 2017 |
| Eigrind AS | | 2021 |
| Eigudeill AS | | 2021 |
| Eihaso Invest AS | Professional & scientific | 2019 |
| Eihpos AS | Administrative & support | 2020 |
| Eiin Invest AS | | 2023 |
| Eijerstam Invest AS | Transport & logistics | 1985 |
| Eijerstam Vekst 1 AS | Professional & scientific | 2024 |
| Eijerstam Vekst 2 AS | Professional & scientific | 2024 |
| Eijk Media AS | Arts & recreation | 2020 |
| Eik & Tid AS | Manufacturing | 2014 |
| Eik Annen Etage AS | Hospitality | 2006 |
| Eik Bella Bambina AS | Hospitality | 2012 |
| Eik Eiendom, Invest Og Kunst AS | Arts & recreation | 2018 |
| Eik Enter AS | Administrative & support | 2016 |
| Eik Fjord AS | Hospitality | 2007 |
| Eik Gruppen AS | Administrative & support | 2014 |
| Eik S Holding AS | Administrative & support | 2021 |
| Eik Savoy AS | Hospitality | 2003 |
| Eik Teater AS | Hospitality | 2015 |
| Eik Teatro Vika AS | Hospitality | 2018 |
| Eika Alliansen AS | Energy | 2007 |
| Eika Boligkreditt AS | Financial services | 2003 |
| Eika Digitalbank AS | Financial services | 2006 |
| Eika Gruppen AS | Financial services | 1997 |
| Eika Kapitalforvaltning AS | Financial services | 1997 |
| Eika VBB AS | Financial services | 2018 |
| Eika Økonomi AS | Professional & scientific | 2018 |
| Eikaberg AS | | 1965 |
| Eikaklinikken AS | Health & social care | 2024 |
| Eikcraft Solutions AS | Real estate | 2024 |
| Eikebakke AS | Professional & scientific | 2016 |
| Eikefjord Invest AS | Financial services | 2005 |
| Eikeland - Bygg AS | Construction | 2025 |
| Eikeland Consult AS | Professional & scientific | 2020 |
| Eikeland Kapital AS | | 2025 |
| Eikeland Revisjon AS | Professional & scientific | 2021 |
| Eikeli Boliginvest AS | | 2019 |
| Eikeli Eiendom AS | Real estate | 2018 |
| Eikeli Invest AS | | 2026 |
| Eikenes Consulting AS | Information & communication | 2019 |
| Eikenes Invest AS | | 2019 |
| Eikenga 17 AS | Real estate | 1999 |
| Eikenga 25 AS | Real estate | 1938 |
| Eikenga 27 AS | Administrative & support | 2015 |
| Eikenga 31-33 AS | Real estate | 2014 |
| Eikenga 7 AS | Real estate | 2011 |
| Eikenga 9-15 AS | Real estate | 2020 |
| Eikens Holding AS | Real estate | 2013 |
| Eikenøtten Barnehage SA | Education | 1978 |
| Eikenøtten Holding AS | | 2025 |
| Eiker Regnskapsentral AS | Professional & scientific | 2017 |
| Eiker Senter AS | Real estate | 2004 |
| Eiker Senter II AS | Real estate | 2003 |
| Eiker Senter III AS | Real estate | 2015 |
| Eikeri Holding AS | Wholesale & retail | 2005 |
| Eikestad AS | Real estate | 1994 |
| Eiketangen AS | Real estate | 2021 |
| Eikhr AS | | 2025 |
| Eikland AS | Financial services | 2005 |
| Eikland Holding AS | | 2024 |
| Eiklesvegen 36 AS | Real estate | 2026 |
| Eikli Media AS | Information & communication | 2025 |
| Eiklid & Ekdahl Elektro AS | Construction | 2026 |
| Eiklid & Ekdahl Elektro AS | Construction | 1997 |
| Eiklid Consult AS | Education | 2019 |
| Eiklid Rusten AS | Wholesale & retail | 2019 |
| Eikon Holding AS | Real estate | 2008 |
| Eikparken Eiendom AS | Real estate | 2016 |
| Eikparken Holding AS | Financial services | 2022 |
| Eikr AS | | 2019 |
| Eikra AS | | 2026 |
| Eikringen 19 Og 20 AS | Real estate | 2015 |
| Eiksmarka Boligutvikling AS | Real estate | 2014 |
| Eiksmarka Utvikling AS | Real estate | 2013 |
| Eiksund Invest AS | Real estate | 1990 |
| Eiksveien 108 - 110 Ans | Real estate | 1998 |
| Eiksveien 108 AS | Real estate | 2017 |
| Eikum AS | Professional & scientific | 2009 |
| Eikvig AS | Construction | 2017 |
| Eil AS | | 2020 |
| Eil Invest AS | | 2022 |
| Eilander Hytte Ans | Hospitality | 2025 |
| Eileen II Sail Charter AS | Administrative & support | 2020 |
| Eilefs Landhandleri AS | Hospitality | 2019 |
| Eilert Nyhuus AS | Administrative & support | 1990 |
| Eilert Sundt - Sio Barnehage AS | Education | 2022 |
| Eilert Sundts Gate 13 AS | Real estate | 2017 |
| Eilert Sundts Gate 14B AS | Real estate | 2020 |
| Eilert Sundts Plass 2 4 AS | Real estate | 2000 |
| Eilert Sundtsgate 11 AS | Real estate | 1936 |
| Eilert Sundtsgate 39 AS | Real estate | 2013 |
| Eilert Sundtsgt. 18 AS | Real estate | 2024 |
| Eilert-Olsen Invest AS | | 2021 |
| Eilerts AS | Real estate | 2019 |
| Eilertsen Consulting Ltd Nuf | Information & communication | 2007 |
| Eilertsen Entrepenør AS | Construction | 2021 |
| Eilo Holding AS | | 2014 |