| Equitatus AS | Financial services | 2018 |
| Equities in Dallas AS | | 2025 |
| Equitime Holding AS | Wholesale & retail | 2008 |
| Equity AS | Real estate | 2015 |
| Equity Capital AS | Professional & scientific | 2020 |
| Equity Invest AS | Real estate | 2019 |
| Equity Nest AS | Professional & scientific | 2018 |
| Equus Informasjon Og Media AS | Professional & scientific | 1999 |
| Er Advisory AS | Professional & scientific | 2022 |
| Er Værekraft AS | Health & social care | 2026 |
| Er-Sykkel AS | Manufacturing | 2022 |
| Era Bil AS | Wholesale & retail | 2012 |
| Era Entreprenør AS | Construction | 2023 |
| Era Gatekjøkken Da | Hospitality | 1989 |
| Era Investor AS | Professional & scientific | 2025 |
| Era Nord AS | Construction | 2026 |
| Era Technologies AS | Information & communication | 2026 |
| Era Tran AS | Wholesale & retail | 2016 |
| Eraker Invest AS | Financial services | 2017 |
| Eranor AS | Construction | 2021 |
| Eranta AS | Real estate | 2006 |
| Erase AS | Construction | 2016 |
| Erate AS | Information & communication | 2005 |
| Eraze AS | Health & social care | 2013 |
| Erb AS | | 2021 |
| Erbapiu Norge AS | Wholesale & retail | 2024 |
| Erbe Invest AS | | 2012 |
| Erbon Prosjekt AS | Real estate | 2025 |
| Erc Technologies AS | Information & communication | 2024 |
| Erco Lighting AB Norsk Filial Nuf | Wholesale & retail | 2022 |
| Ercons AS | Professional & scientific | 2022 |
| Erda AS | | 2026 |
| Erdahl Holding AS | | 2024 |
| Erdal AS | Financial services | 2005 |
| Erdesign AS | Professional & scientific | 2023 |
| Erdvox AS | Arts & recreation | 2024 |
| Ere Offshore Norway AS | | 2024 |
| Erebor AS | Financial services | 2007 |
| Eregion AS | | 2025 |
| Erema Invest AS | | 2017 |
| Eremis AS | Wholesale & retail | 2022 |
| Eremos AS | Wholesale & retail | 2022 |
| Eres AS | | 1998 |
| Erevena AS | Administrative & support | 2024 |
| Erewon AS | Professional & scientific | 2024 |
| Erga Teknikk AS | | 2016 |
| Ergapon Rent Ans Rengjøringsfirma | Administrative & support | 1990 |
| Ergator AS | | 2019 |
| Ergaus Invest AS | Real estate | 2017 |
| Ergo Forsikring A/S Nuf | Financial services | 2025 |
| Ergo Handel AS | Professional & scientific | 2016 |
| Ergo Konsult Og Invest AS | Professional & scientific | 2019 |
| Ergo Smart AS | Administrative & support | 2023 |
| Ergo-Invest AS | Financial services | 2012 |
| Ergo;Ego AS | Education | 2005 |
| Ergocar AS | Wholesale & retail | 2025 |
| Ergomedic AS | Health & social care | 2022 |
| Ergopartner Nuf | Wholesale & retail | 2011 |
| Ergospace AS | Wholesale & retail | 1994 |
| Ergusi AS | | 2020 |
| Ergy AS | Professional & scientific | 2020 |
| Ergy Consulting AS | Professional & scientific | 2015 |
| Ergy International Services AS | Professional & scientific | 2018 |
| Erh 26001 AS | Professional & scientific | 2026 |
| Erh AS | | 2004 |
| Eri-Selskapslokal AS | Real estate | 2023 |
| Ericales Invest AS | | 2021 |
| Erican Invest AS | | 2025 |
| Erichsen Holding AS | | 2019 |
| Erickson Coaching Nordic AS | Education | 2005 |
| Ericson & Saether AS | Wholesale & retail | 1996 |
| Ericsson Television Ltd. | Manufacturing | 2004 |
| Erif Fjord Holdings AS | Information & communication | 2020 |
| Erik Arnesen Helsfyr AS | Other services | 1996 |
| Erik Berge AS | Professional & scientific | 2014 |
| Erik Ege AS | | 2020 |
| Erik Engan AS | Professional & scientific | 1999 |
| Erik Fink Eriksen AS | Health & social care | 2020 |
| Erik Fjeld Invest AS | Real estate | 2005 |
| Erik Hagen Lys Og Elektro Design AS | | 2021 |
| Erik Hegbom AS | Financial services | 2005 |
| Erik Hessen AS | Health & social care | 2007 |
| Erik Holmqvist AS | Wholesale & retail | 2005 |
| Erik Invest AS | Construction | 2005 |
| Erik Investments AS | | 2019 |
| Erik J.L. Mustad AS | | 1973 |
| Erik Juell AS | Real estate | 1974 |
| Erik Jørgensen Møbelfabrik | Professional & scientific | 2014 |
| Erik Langdalen Arkitektkontor AS | Professional & scientific | 1998 |
| Erik Mortensen AS | | 2024 |
| Erik Møller Consulting AS | Professional & scientific | 2015 |
| Erik Nielsen Eiendom AS | Real estate | 1985 |
| Erik Sandberg AS | Information & communication | 1973 |
| Erik Schjetne AS | Real estate | 2005 |
| Erik Snartland AS | Information & communication | 2021 |
| Erik Steen AS | Wholesale & retail | 2006 |
| Erik Svendsrud Holding AS | Health & social care | 2020 |
| Erik Undall AS | Real estate | 1964 |
| Erik V Holding AS | | 2024 |
| Erik Volden AS | Professional & scientific | 2021 |