| Endurance Robotics AS | Information & communication | 2024 |
| Endure Invest AS | | 2026 |
| Ene Invest AS | | 2022 |
| Enea AS | | 2021 |
| Enebakk Eiendomsinvest AS | Real estate | 2021 |
| Enebakk Loginvest AS | Financial services | 2022 |
| Enebakk Næringspark AS | Real estate | 2007 |
| Enebakkveien 117 AS | Real estate | 2016 |
| Enebakkveien 119 AS | Real estate | 1957 |
| Enebakkveien 125 AS | Real estate | 2010 |
| Enebakkveien 127/129 AS | Real estate | 2022 |
| Enebakkveien 133 AS | Real estate | 2010 |
| Enebakkveien 135 AS | Real estate | 2003 |
| Enebakkveien 150 Da | Real estate | 1999 |
| Enebakkveien 205 AS | Real estate | 2026 |
| Enebakkveien 208 AS | Real estate | 2006 |
| Enebakkveien 289 Eiendom AS | Real estate | 2012 |
| Enebakkveien 292 AS | Real estate | 2021 |
| Enebakkveien 300 AS | Real estate | 2015 |
| Enebakkveien 307 AS | Real estate | 2006 |
| Enebakkveien 309 AS | Real estate | 2011 |
| Enebakkveien 310 AS | Real estate | 2018 |
| Enebakkveien 441B AS | Manufacturing | 2015 |
| Enebakkveien 5-11 AS | Construction | 2020 |
| Enebakkveien Næringsbygg AS | Real estate | 2016 |
| Enebakkveien Utvikling AS | Real estate | 2025 |
| Eneco Energy Trade BV | Energy | 2008 |
| Eneldo Holding AS | | 2020 |
| Enelyze AS | Information & communication | 2024 |
| Enem Dagligvare Ans | Wholesale & retail | 1990 |
| Eneo Eiendom AS | Real estate | 2019 |
| Enep AS | Financial services | 1994 |
| Ener Music AS | Arts & recreation | 2020 |
| Enera AS | Wholesale & retail | 2026 |
| Enercon Support GmbH | Administrative & support | 2013 |
| Energeia AS | Energy | 2010 |
| Energeia Bolstadmarka AS | Energy | 2024 |
| Energeia Borg AS | Energy | 2026 |
| Energeia Gunnhus AS | Energy | 2024 |
| Energeia Hagen Gård AS | Energy | 2025 |
| Energeia Italy Holding AS | Energy | 2015 |
| Energeia Marigaard AS | Energy | 2024 |
| Energeia Mæhlum AS | Agriculture & fishing | 2022 |
| Energeia Norway Holding AS | Energy | 2025 |
| Energeia Opsal AS | Energy | 2024 |
| Energeia Seval Skog AS | Energy | 2019 |
| Energeia Store Nøkleberg AS | Real estate | 2022 |
| Energeia Veldre AS | Energy | 2022 |
| Energeia Ålamoen AS | Energy | 2024 |
| Energeia Øystadmarka AS | Real estate | 2022 |
| Energi & Miljøteknikk AS | Construction | 2017 |
| Energi AS | Professional & scientific | 2021 |
| Energi Eiendom AS | Real estate | 2022 |
| Energi Forlag AS | Information & communication | 2007 |
| Energi Invest Holding AS | Construction | 2015 |
| Energi Media Norge AS | Information & communication | 2021 |
| Energi Og Tørkeklubben SA | Professional & scientific | 2021 |
| Energi Prosjektledelse AS | Professional & scientific | 2012 |
| Energi Salg Norge AS | | 2025 |
| Energi.Ai AS | Information & communication | 2021 |
| ENERGI1OLJE AS | Wholesale & retail | 1991 |
| Energianlegg AS | Construction | 2007 |
| Energihjelpen AS | Professional & scientific | 2024 |
| Energii Norway AS | Arts & recreation | 2025 |
| Energikapital AS | Professional & scientific | 2009 |
| Energioptimalisering Norge AS | Professional & scientific | 2022 |
| Energirampen AS | Professional & scientific | 2024 |
| Energirådgivning Norge AS | Professional & scientific | 2025 |
| Energisaver AS | Wholesale & retail | 2020 |
| Energiservice Øst AS | Construction | 2014 |
| Energitiltak Partner AS | Information & communication | 2026 |
| Energivegen 2 AS | Real estate | 2014 |
| Energivegen 5 AS | Real estate | 2020 |
| Energize Nordic AS | Professional & scientific | 2019 |
| Energy A-B-C AS | | 2026 |
| Energy Cluster Norway AS | Professional & scientific | 2024 |
| Energy Consulting AS | Professional & scientific | 1996 |
| Energy Game Limited | Information & communication | 2026 |
| Energy Growth Partners AS | Professional & scientific | 2008 |
| Energy Retail AS | Wholesale & retail | 2017 |
| Energy Tech Solution Co., Ltd. Nuf | Professional & scientific | 2025 |
| Energy Traders Consulting Holding Limited | | 2022 |
| Energy Traders Consulting Limited | Professional & scientific | 2021 |
| Energybuoy AS | Professional & scientific | 2012 |
| Energyhubs AS | Energy | 2019 |
| Energylab AS | Professional & scientific | 2025 |
| Energyoptimal AS | Professional & scientific | 2009 |
| Enerhaugen Bar AS | Hospitality | 2023 |
| Enerhaugen Bil AS | Other services | 1999 |
| Enerhaugen Holding AS | Professional & scientific | 2005 |
| Enerhaugen Invest Nuf | Information & communication | 2006 |
| Enerhaugen Legene AS | Health & social care | 2018 |
| Enerhaugen Panorama AS | Construction | 2022 |
| Enerim Norway Nuf | Professional & scientific | 2012 |
| Enerlista AS | Construction | 2022 |
| Enerlys' Rørservice AS | Construction | 2021 |
| Enernite Group AS | Information & communication | 2021 |
| Enero AS | Real estate | 2005 |
| Enersys AS | Wholesale & retail | 1991 |
| Enervea AS | Professional & scientific | 2026 |