| Egon Holding AS | Manufacturing | 2005 |
| Eidissen Holding AS | | 2019 |
| Eiendom 1624 AS | Real estate | 2018 |
| Eiendom Og Kunst AS | Arts & recreation | 2018 |
| Eiendomsinvest AS | Real estate | 1989 |
| Eiendomspiten AS | Real estate | 2005 |
| Eiendomsutvikling Øst AS | Real estate | 2014 |
| Eighth Avenue by M AS | Other services | 2024 |
| Eiker Automasjon AS | Manufacturing | 2002 |
| Eikerveien Eiendom AS | Real estate | 2005 |
| Eiklia AS | Real estate | 2023 |
| Eirion AS | Professional & scientific | 2026 |
| Eirya AS | | 2026 |
| Ej Invest AS | Financial services | 2005 |
| Ek Eiendomsinvest AS | Real estate | 2007 |
| Ekrion Invest AS | Professional & scientific | 2025 |
| Eky Kompetanse AS | Professional & scientific | 2013 |
| El-Power Consult AS | Professional & scientific | 2014 |
| Electronics Design Kongsberg AS | Professional & scientific | 2026 |
| Elektra Da | Information & communication | 2007 |
| Elektrikeren Kongsberg AS | Construction | 1991 |
| Elektroprosess Scandinavia AS | Wholesale & retail | 2004 |
| Elfarri Holding AS | | 2022 |
| Elfo Subsea AS | Professional & scientific | 2018 |
| Elite Titan AS | Professional & scientific | 2018 |
| Elmcrest Capital AS | | 2025 |
| Elmo Holding AS | Financial services | 2013 |
| Elvebredden AS | Real estate | 2016 |
| Elvekapital AS | | 2025 |
| Elveveien 2 AS | Real estate | 2020 |
| Emel Holding AS | Professional & scientific | 2017 |
| Emf Consult AS | Professional & scientific | 2017 |
| Emmi Invest AS | | 2020 |
| Emtech AS | Professional & scientific | 2005 |
| Ene Holding AS | | 2023 |
| Energy Invest AS | | 2022 |
| Engene AS | Real estate | 2021 |
| Engeset Rådgivning AS | Professional & scientific | 2017 |
| Eplegrenda AS | Real estate | 2023 |
| Erfaringskraft AS | Information & communication | 2026 |
| Erik Darrud Holding AS | | 2022 |
| Erlings Mathus AS | Wholesale & retail | 2003 |
| Eroht AS | Hospitality | 2005 |
| Esca Norge Ans | Wholesale & retail | 1996 |
| Esco Eiendom AS | Real estate | 2010 |
| Esko Invest AS | | 2021 |
| Esmnemon AS | Financial services | 2018 |
| Esps Nopas Holding AS | | 2018 |
| Essilor Norge AS | Wholesale & retail | 1965 |
| Estak Eiendom AS | Real estate | 2020 |
| Estell AS | Real estate | 2023 |
| Estell Bygg AS | Construction | 2023 |
| Etnisk Musikklubb AS | Wholesale & retail | 1996 |
| Etre Belle AS | Other services | 2019 |
| Ev Holding AS | Construction | 2005 |
| Ev Invest AS | Wholesale & retail | 2005 |
| Ev Service AS | Construction | 2002 |
| Eventyra AS | Information & communication | 2021 |
| Exacta AS | Professional & scientific | 1992 |
| Exail AS | Professional & scientific | 2022 |
| Expedition Pink Ribbon AS | Arts & recreation | 2021 |
| Expressdekor AS | Manufacturing | 2005 |
| Ezolutions AS | Professional & scientific | 2019 |
| Falkeveien Holding AS | Real estate | 2014 |
| Famze Holding AS | Manufacturing | 2017 |
| Fandema AS | Professional & scientific | 2022 |
| Fastfood Sidhu AS | Hospitality | 2018 |
| Fathom Robotics AS | Professional & scientific | 2016 |
| Fellag AS | Information & communication | 2026 |
| Femo Invest AS | Real estate | 2024 |
| Finflink AS | Information & communication | 2026 |
| Fire-E AS | Professional & scientific | 2022 |
| Firman Holding AS | | 2025 |
| First Choice Consulting AS | Professional & scientific | 2006 |
| Fitfx Training Incorporated AS | Education | 2022 |
| Fjeldbjerk Invest AS | Real estate | 2017 |
| Fjell Software AS | Information & communication | 2023 |
| Fjellhus AS | Construction | 2005 |
| Flatirons Norge AS | Information & communication | 1991 |
| Flesberg Bygg Og Eiendom AS | Real estate | 2012 |
| FM Invest & Eiendom AS | Construction | 2018 |
| FMC Corporation UK Ltd | Mining & quarrying | 1995 |
| FMC Kongsberg International AG | Manufacturing | 2002 |
| FMC Overseas Ltd | Mining & quarrying | 1998 |
| FMC Technologies Australia Limited | Mining & quarrying | 2004 |
| FMC Technologies Canada Company | Manufacturing | 2004 |
| FMC Technologies India Private Ltd | Professional & scientific | 2010 |
| FMC Technologies Limited | Professional & scientific | 2011 |
| FMC Technologies Overseas Ltd | | 2002 |
| FMC Technologies Singapore Pte Ltd | Professional & scientific | 2010 |
| FMC Technologies Sp.Z.O.O | Professional & scientific | 2007 |
| Fme Holding AS | Wholesale & retail | 2022 |
| FNB Holding AS | Hospitality | 2021 |
| Fodima AS | Professional & scientific | 2025 |
| Forenede Montører AS | Construction | 2008 |
| Forfengeligheten AS | Wholesale & retail | 2007 |
| Fothelseklinikken AS | Health & social care | 2025 |
| Fotterapauten Monica Henry AS | Health & social care | 2015 |
| Fram Renholdere AS | Administrative & support | 2020 |
| Franske Feriehus AS | Real estate | 1998 |