| Equinor Dezassete AS | Mining & quarrying | 1992 |
| Equinor E&P Americas AS | Mining & quarrying | 1992 |
| Equinor Energy AS | Mining & quarrying | 2007 |
| Equinor Energy International AS | Mining & quarrying | 2005 |
| Equinor Energy Libya AS | Mining & quarrying | 1994 |
| Equinor Gas Marketing Europe AS | Energy | 2007 |
| Equinor Global Projects AS | Professional & scientific | 2018 |
| Equinor in Amenas AS | Mining & quarrying | 2003 |
| Equinor in Salah AS | Mining & quarrying | 2003 |
| Equinor India AS | Professional & scientific | 1997 |
| Equinor Insurance AS | Financial services | 1985 |
| Equinor International Well Response Company AS | Mining & quarrying | 2012 |
| Equinor Libya AS | Mining & quarrying | 2004 |
| Equinor LNG Ship Holding AS | Mining & quarrying | 2017 |
| Equinor LNG Trading AS | Energy | 2024 |
| Equinor Low Carbon Solution AS | Professional & scientific | 2021 |
| Equinor Midstream & Trading AS | Mining & quarrying | 2022 |
| Equinor Murzuq AS | Mining & quarrying | 1997 |
| Equinor New Energy AS | Professional & scientific | 1999 |
| Equinor Nigeria AS | Mining & quarrying | 1993 |
| Equinor Norsk LNG AS | Mining & quarrying | 2000 |
| Equinor Power Services AS | Energy | 2026 |
| Equinor Projects Holding AS | Mining & quarrying | 2024 |
| Equinor Russia Energy AS | Mining & quarrying | 1998 |
| Equinor Russia Holding AS | Professional & scientific | 2019 |
| Equinor Tanzania AS | Mining & quarrying | 2006 |
| Equinor Utsira Nord AS | Professional & scientific | 2023 |
| Equinor Ventures AS | Mining & quarrying | 1999 |
| Equinor Wind Power AS | Professional & scientific | 1995 |
| Equisør AS | Professional & scientific | 2018 |
| Era Line AS | Wholesale & retail | 2022 |
| Erdaka AS | Professional & scientific | 2023 |
| Erebor Holding AS | | 2026 |
| Erevik Holding AS | Financial services | 2018 |
| Erevik Vann- Og Avløpslag SA | Water & waste | 2021 |
| Erfjord Eiendomsutvikling AS | Real estate | 2007 |
| Erga Invest AS | Professional & scientific | 1998 |
| Erga Revisjon AS | Professional & scientific | 1998 |
| Erga Rådgivning AS | Professional & scientific | 2001 |
| Ergonomene AS | Health & social care | 2013 |
| Erik Dobbelw AS | Wholesale & retail | 1978 |
| Erik Eide Holding AS | | 2023 |
| Erik Jarlsby AS | Professional & scientific | 2002 |
| Erik W Andersen AS | Wholesale & retail | 1996 |
| Eriksfiord AS | Professional & scientific | 2001 |
| Eripio AS | Information & communication | 2024 |
| Erirem Holding AS | | 2021 |
| Erland Care AS | Professional & scientific | 2010 |
| Erland Innovation AS | Professional & scientific | 2026 |
| Erlend Singsaas Holding AS | Health & social care | 2021 |
| Erp Management AS | Information & communication | 2017 |
| Ersvik Vann- Og Avløpslag SA | Water & waste | 2019 |
| Ersø Invest AS | Financial services | 2005 |
| Eruca AS | Hospitality | 2018 |
| Eryx AS | Professional & scientific | 2012 |
| Esa Invest AS | | 2020 |
| Esaph Holding AS | | 2025 |
| Escai AS | Professional & scientific | 2019 |
| Ese Solutions AS | | 2019 |
| Esea AS | Professional & scientific | 2013 |
| Esea Technology AS | Professional & scientific | 2019 |
| Esinvest AS | Professional & scientific | 2020 |
| Eskervegen 1 Og 5 AS | Real estate | 2006 |
| Espedal & Co AS | Real estate | 2005 |
| Espeland Eiendommer AS | Real estate | 2008 |
| Espen Eide & Partnere AS | Real estate | 2010 |
| Ess Bygg Eiendom AS | Real estate | 1993 |
| Ess Bygg Stavanger AS | Wholesale & retail | 2000 |
| Ess Mobile Offshore Units AS | Hospitality | 1971 |
| Ess Support Services AS | Hospitality | 1985 |
| Ess-Bygg AS | Construction | 1980 |
| Esse Skandinavia AS | Wholesale & retail | 2016 |
| Esse Solutions AS | Professional & scientific | 2025 |
| Esso Australia Pty Ltd | Administrative & support | 2012 |
| Esso Nederland BV | Wholesale & retail | 1998 |
| Esso Petroleum Company Limited | Administrative & support | 2004 |
| Esso Societe Anonyme Francaise | Administrative & support | 2004 |
| Estate Office AS | Professional & scientific | 2020 |
| Estate-Invest AS | Real estate | 2025 |
| Estra AS | Professional & scientific | 2020 |
| Esyd Holding AS | | 2021 |
| Et-Air Norway AS | Professional & scientific | 2022 |
| Etaoin Shrdlu AS | Financial services | 2018 |
| Eti Invest AS | | 2026 |
| Etiopisk Restaurant Gådjå Da | Hospitality | 1995 |
| Etoa Eiendom AS | Real estate | 2021 |
| Etos Patos Logos AS | Real estate | 1997 |
| Ett Skritt Foran AS | | 2022 |
| Euka Design AS | Professional & scientific | 2026 |
| Eumeria AS | | 2024 |
| Eumetis Holding AS | | 2026 |
| Eureka Energy Partners AS | Education | 2012 |
| Eureka Møbler AS | Wholesale & retail | 2021 |
| European Certifications AS | Professional & scientific | 2019 |
| European Resource AS | Professional & scientific | 1995 |
| Europenano AS | Wholesale & retail | 2017 |
| Eurovekst 2000 AS | Real estate | 2000 |
| Ev Elektro AS | Construction | 2025 |
| Ev Private Equity Founding Partners Joiners AS | | 2022 |
| Ev Private Equity Holding AS | Professional & scientific | 2023 |