| D. Rosenberg AS | Wholesale & retail | 2026 |
| Dahl Eiendom Invest AS | Real estate | 2005 |
| Dahlgren Holding AS | Real estate | 2018 |
| Dahltech AS | Information & communication | 2024 |
| Dax AS | | 2022 |
| Deda Eiendomsservice AS | Administrative & support | 2018 |
| Def AS | Transport & logistics | 2005 |
| Dekkonline.No AS | Wholesale & retail | 2016 |
| Denek Holding AS | Financial services | 2017 |
| Design Linking AS | Professional & scientific | 2025 |
| Desipro AS | Professional & scientific | 2014 |
| Det Norske Matfatet AS | Wholesale & retail | 2026 |
| Dg-Invest AS | | 2021 |
| Didrick Holding AS | | 2026 |
| Dimmen Invest AS | | 2021 |
| Dimon AS | Construction | 2020 |
| Doktrina AS | Education | 2016 |
| Dolash Holding AS | Transport & logistics | 2021 |
| Dreamlife Costa Blanca AS | Real estate | 2017 |
| Dyc Industrier AS | Wholesale & retail | 2024 |
| E Og M AS | Wholesale & retail | 2023 |
| Easybet AS | Information & communication | 2022 |
| Easybring AS | Professional & scientific | 2015 |
| Eco Elektrik AS | Wholesale & retail | 2022 |
| Edj Invest AS | | 1993 |
| EDS1 AS | Hospitality | 2026 |
| Ega AS | Professional & scientific | 1997 |
| Egeberg Hjelm AS | | 2022 |
| Eid Events Og Utleie AS | Administrative & support | 2018 |
| Eimar Invest AS | | 2021 |
| Einer Drinks AS | Wholesale & retail | 2020 |
| Ekornes Beds AS | Manufacturing | 1989 |
| Ekotuningcom AS | Wholesale & retail | 2010 |
| Ekte Treats AS | Wholesale & retail | 2024 |
| Elskis AS | | 2022 |
| Ember Decor AS | Wholesale & retail | 2023 |
| Emberland AS | Professional & scientific | 2025 |
| Engebakken Familiebarnehage Da | Education | 2002 |
| Engerhagen AS | | 2005 |
| Engtrø Holding AS | Construction | 2009 |
| Erik Sommer AS | Wholesale & retail | 2013 |
| Es-Rk Holding AS | | 2026 |
| Esm Holding AS | | 2021 |
| Esro AS | | 2026 |
| Esthia Eiendom AS | Real estate | 2024 |
| Etterspenning AS | Information & communication | 2025 |
| Eugenias Hus AS | Wholesale & retail | 2013 |
| Euphoria Industries AS | Other services | 2025 |
| Euro Murer Oslo AS | Construction | 2017 |
| Evas Hjerterom AS | Wholesale & retail | 2020 |
| Faso AS | Wholesale & retail | 2007 |
| Fet Arena AS | Arts & recreation | 2015 |
| Fet Arkitektur Og Design AS | Professional & scientific | 2021 |
| Fet Bil AS | Other services | 2018 |
| Fet Bilverksted Lakk & Karosseri Da | Real estate | 1995 |
| Fet Boligbygg AS | Construction | 2024 |
| Fet Bygg AS | Construction | 2025 |
| Fet Legesenter AS | Health & social care | 1999 |
| Fetsund Barbershop AS | Other services | 2024 |
| Fetsund Barnehage SA | Education | 1999 |
| Fetsund Elektro AS | Construction | 1990 |
| Fetsund Fysio AS | Health & social care | 2015 |
| Fetsund Legekontor AS | Health & social care | 1999 |
| Fetsund Maskin AS | Wholesale & retail | 1986 |
| Fetsund Sushi Og Wok AS | Hospitality | 2021 |
| Fetsund Tannklinikk AS | Health & social care | 2013 |
| Fetsund Treningsenter AS | Arts & recreation | 2011 |
| Fetsund Veiservice AS | Wholesale & retail | 2012 |
| Fjeller Invest AS | | 2021 |
| Fleximøbler AS | Wholesale & retail | 2025 |
| Fleximøbler Da | Wholesale & retail | 2024 |
| Folie Partner AS | Construction | 2025 |
| Fornebu Pizza Fetsund AS | Hospitality | 2024 |
| Foss Eiendom AS | Real estate | 1986 |
| Foss Viking AS | Manufacturing | 1981 |
| Fotostorie AS | Professional & scientific | 2024 |
| Fragment Ventures AS | Financial services | 2014 |
| Fraktlaget Da | Transport & logistics | 2024 |
| Frank Fugli Og Sønn AS | Manufacturing | 1997 |
| Friberg Bilberging AS | Transport & logistics | 2018 |
| Front Invest Holding AS | | 2025 |
| Fråstad Utleie AS | Administrative & support | 2023 |
| Furukollen Grendelag Ba | Real estate | 1984 |
| Fus-I-Alt Da | Wholesale & retail | 2011 |
| Gan Eiendom AS | Real estate | 1996 |
| Gan Maskinforretning AS | Wholesale & retail | 1980 |
| Ganero Capital AS | Financial services | 2017 |
| Garderåsen Mat AS | Wholesale & retail | 2017 |
| Get Even AS | Financial services | 2017 |
| Gevir Gjenbruk Ans | Wholesale & retail | 2024 |
| GH Group AS | Transport & logistics | 2025 |
| Gjedde Og Meglerivirksomhet AS | | 2023 |
| GMK Holding AS | | 2021 |
| Go Fossum AS | Real estate | 2016 |
| Go Fossum Driv AS | Real estate | 2022 |
| Golden Rules AS | Professional & scientific | 2015 |
| Gossner Holding AS | Financial services | 2018 |
| Gro Narvestad Salong AS | Other services | 2013 |
| Grøndahl Invest AS | Professional & scientific | 2018 |
| Gullmyr Eiendom AS | Real estate | 2022 |