| Erik Sedin Kopperud AS | | 2026 |
| Es Auto AS | Other services | 2026 |
| Escapade AS | Information & communication | 2001 |
| Espen Østli AS | Transport & logistics | 2023 |
| Ess Takst Og Eiendom AS | Professional & scientific | 2015 |
| Essential Home AS | Wholesale & retail | 2025 |
| Esthemedic Travel AS | Other services | 2024 |
| Et Ess AS | Financial services | 2024 |
| Et Romerike Eiendom AS | Real estate | 2025 |
| Evas Bunadsøm AS | Manufacturing | 2024 |
| Evendo Invest AS | Construction | 2018 |
| Evendo Teknikk AS | Construction | 2018 |
| Eventyrporten AS | | 2026 |
| Evi Beauty AS | Other services | 2023 |
| Ews Invest AS | Construction | 2017 |
| Expressions AS | Wholesale & retail | 2023 |
| Ezzenzit AS | Information & communication | 2011 |
| Fagerborg Renseri Jessheim AS | Manufacturing | 2023 |
| Fageråsen Chalet AS | Real estate | 2019 |
| Fairways Invest AS | Real estate | 2017 |
| Fala Holding AS | Real estate | 2018 |
| Falch Brovold Invest AS | Real estate | 2005 |
| Falsten Holding AS | Construction | 2019 |
| Familiebolig AS | Real estate | 2013 |
| Familiebygg AS | Real estate | 2012 |
| Fari Eiendom AS | Real estate | 2018 |
| Fas Holding AS | | 2005 |
| Fasadetjenester AS | Administrative & support | 2024 |
| Fast Eiendom Jessheim AS | Real estate | 2009 |
| Fast Holding AS | Real estate | 2007 |
| Favn 8 AS | Real estate | 2023 |
| Favn T26 AS | Real estate | 2023 |
| Favntoppen Chalet AS | Real estate | 2022 |
| FC Pro AS | Professional & scientific | 2017 |
| Feelgood Jessheim AS | Arts & recreation | 2024 |
| Feelgood Velvære AS | Other services | 2015 |
| Fellesreiser AS | Administrative & support | 2003 |
| Fem Elver AS | Hospitality | 2026 |
| Femini AS | Health & social care | 2019 |
| Femini Holding AS | Health & social care | 2023 |
| Fenori Io AS | Information & communication | 2025 |
| Fenstad Bygg AS | Construction | 1995 |
| Ferdinand AS | Hospitality | 1994 |
| Ferncroft Kapital AS | Real estate | 2025 |
| Ferskvarehuset AS | Manufacturing | 2007 |
| FF Eiendom Hamar AS | Real estate | 2022 |
| Fftw AS | Financial services | 2016 |
| FG Boligforvaltning AS | Real estate | 2019 |
| FG Eiendomsforvaltning AS | Real estate | 2022 |
| FG Entreprenør AS | Wholesale & retail | 2014 |
| FG Interiør AS | Real estate | 2023 |
| FH Eiendomstjenester AS | Administrative & support | 2024 |
| Fiberlink AS | Information & communication | 2020 |
| Fikse Net AS | Information & communication | 2000 |
| Filmklipperen AS | Information & communication | 2020 |
| Final Cut AS | Professional & scientific | 2019 |
| Finans AS | Real estate | 2005 |
| Finnanger IT AS | Information & communication | 2020 |
| Fire Forve AS | Real estate | 2005 |
| First Media AS | Professional & scientific | 2016 |
| First Motors AS | Other services | 2025 |
| Fiskaa Entreprenør AS | Construction | 2024 |
| Fiskerud Brands AS | Professional & scientific | 2017 |
| Fitnesspoint Sand Jessheim Treningssenter AS | Arts & recreation | 2023 |
| Fjeldheim Bygg AS | Construction | 2021 |
| Fjeldlund Invest AS | Financial services | 2017 |
| Fjellfoten Utbygging AS | Real estate | 2021 |
| Fjellresidence AS | Real estate | 2021 |
| Fjellvertene AS | Hospitality | 2024 |
| Fjord Data Nexus AS | Information & communication | 2022 |
| Flemming Hansen AS | Wholesale & retail | 2001 |
| Flemming Hansen Holding AS | Wholesale & retail | 2005 |
| Flemo AS | Information & communication | 2016 |
| Flesvig Invest AS | | 2025 |
| Flinterud Holding AS | | 2025 |
| Flott Rent AS | Administrative & support | 2025 |
| Fluid AS | Wholesale & retail | 2015 |
| Flumine AS | Professional & scientific | 2019 |
| Flylegene AS | Health & social care | 2022 |
| FM Marine AS | Transport & logistics | 2018 |
| Focal Holding AS | Wholesale & retail | 2021 |
| Foggy Glasses Da | Information & communication | 2019 |
| Fogtmann Consulting AS | Professional & scientific | 2014 |
| Fonthill Management Consulting AS | Professional & scientific | 2015 |
| Food for Mood AS | Hospitality | 2021 |
| Forandring Fryder AS | Health & social care | 2020 |
| Form Entreprenør AS | Construction | 2020 |
| Fortellerhuset Mediekunstnerne Da | Arts & recreation | 2006 |
| Foso Invest AS | Real estate | 2017 |
| Fossheim Global Holding AS | | 2023 |
| Fotograf Hege K.Leren AS | Professional & scientific | 2025 |
| Framtid Holding AS | Transport & logistics | 2021 |
| Framtid Transport AS | Transport & logistics | 2021 |
| Franklincovey Education Norge AS | Information & communication | 2012 |
| Frauna Jessheim AS | Hospitality | 2026 |
| Fresh Søsken Holding AS | Hospitality | 2024 |
| Friderichsfeldt Ingeniørbureau AS | Professional & scientific | 1998 |
| Friske Tanker AS | Education | 2018 |
| Frisørgrossisten AS | Wholesale & retail | 1992 |
| Frogner Chauffeur AS | Transport & logistics | 2024 |