| Ersgaard Industrigata AS | Real estate | 2022 |
| Ersgaard Inge Krokans Veg AS | Real estate | 2020 |
| Ersgaard Moelv 1 AS | Real estate | 2020 |
| Ersgaard Nordre Park I AS | Real estate | 2021 |
| Ersgaard Nordre Park II AS | Real estate | 2022 |
| Ersgaard Raufoss AS | Real estate | 2022 |
| Ersgaard Reinsvoll AS | Real estate | 2021 |
| Ersgaard Skogen AS | Real estate | 2021 |
| Ersgaard Skogen Vest AS | Real estate | 2023 |
| Ersgaard Stabbursvegen AS | Real estate | 2021 |
| Ersgaard Storgata AS | Real estate | 2020 |
| Ersgaard Vatninga AS | Real estate | 2022 |
| Ersgaard Øvre AS | Real estate | 2018 |
| Ese AS | Real estate | 2021 |
| Esl Holding AS | Financial services | 2018 |
| Essem AS | Hospitality | 1994 |
| Esteins Holding AS | Real estate | 2020 |
| Evensen Eiendom AS | Real estate | 1968 |
| Event 61 Grader Nord Lillehammer AS | Administrative & support | 2017 |
| Eventering AS | Information & communication | 2018 |
| Exist Internet AS | Wholesale & retail | 2000 |
| Expert Radio - TV AS | Wholesale & retail | 1981 |
| F.H.U.P Mastyl | Construction | 2004 |
| Faanes Invest AS | | 2021 |
| Fabrikken AS | Real estate | 2005 |
| Fagstad Holding AS | Real estate | 2015 |
| Fagstadlia 4 AS | Real estate | 2018 |
| Fagstadlia Fus Barnehage AS | Education | 2018 |
| Falkenberg AS | Wholesale & retail | 1994 |
| Familie Og Nettverkskontoret Ans | Health & social care | 1999 |
| Fantastiko by Viktor AS | Other services | 2022 |
| Far Blue Hills AS | Agriculture & fishing | 1999 |
| Farberg Invest AS | Administrative & support | 2024 |
| Fasit Norge Ans | Health & social care | 2015 |
| Fastforward AS | Professional & scientific | 2019 |
| Fatboy Haircare Norway AS | Wholesale & retail | 2012 |
| Fauskrud Invest AS | | 2025 |
| Favn Kapital AS | | 2026 |
| Felgen Trafikkskole AS | Education | 2006 |
| Fengslet Eiendom AS | Real estate | 2011 |
| Fenix Outdoor AB | Wholesale & retail | 2016 |
| Fenix Outdoor Import AS | Wholesale & retail | 2015 |
| Fenix Outdoor Norge AS | Wholesale & retail | 1978 |
| Ferst Media | Professional & scientific | 2017 |
| Fibie Invest AS | Financial services | 2014 |
| Filmbin AS | Information & communication | 2002 |
| Filminvest AS | Information & communication | 2016 |
| Fine Intervall AS | Information & communication | 2022 |
| Fira Holding AS | Health & social care | 2025 |
| Fischer AS | Construction | 2019 |
| Fjell Entreprenør AS | Construction | 2024 |
| Fjellet Utvikling AS | Real estate | 2022 |
| Fjellpulken Eiendom AS | Manufacturing | 2012 |
| Fjellpulken Holding AS | Manufacturing | 2012 |
| Fjellrast AS | Real estate | 1991 |
| Fjellregionen Kiropraktor AS | Health & social care | 2016 |
| Fjellrypa AS | | 2020 |
| Fjällräven International AB Nuf | Wholesale & retail | 2008 |
| FKD Holding AS | | 2024 |
| FLD Holding AS | Real estate | 2020 |
| Flingsloth AS | | 2022 |
| Floberghagen Invest AS | | 2025 |
| Flåklypa AS | Wholesale & retail | 2006 |
| Flømyrvegen Skogsbilveglag SA | Real estate | 2014 |
| Fløyten Beitelag SA | Agriculture & fishing | 1940 |
| Folstad-Takst AS | Real estate | 2021 |
| Forbrukerjournalisten AS | Arts & recreation | 2018 |
| Fosmo Holding AS | Wholesale & retail | 2005 |
| Fossekall AS | Professional & scientific | 1988 |
| Fotoeventyret AS | Professional & scientific | 2004 |
| Fotograf Kirsti Hovde AS | Professional & scientific | 2011 |
| Framifraa Opplæring AS | Education | 2022 |
| Fredrik Alver Holding AS | | 2023 |
| Fremad Holding AS | | 2023 |
| Fresan AS | Professional & scientific | 2016 |
| Friborg Invest AS | Real estate | 2025 |
| Frich's Spiseri Maihaugen AS | Hospitality | 2018 |
| Frida Kvikne Dotterud AS | Health & social care | 2018 |
| Fridom AS | Real estate | 2002 |
| Fridom Holding AS | Wholesale & retail | 1987 |
| Friis - Mørch Holding AS | Hospitality | 2005 |
| Friistiil AS | Professional & scientific | 2020 |
| Friogfrank AS | Information & communication | 2012 |
| Frisk Hytter AS | Construction | 2020 |
| Frisør Invest AS | Other services | 2008 |
| Fruityfriendly AS | Wholesale & retail | 2018 |
| Frya Holding AS | | 2019 |
| Fryd Frisør Bryggeriet AS | Other services | 2024 |
| Fræm Advokatfirma AS | Professional & scientific | 2026 |
| FS Mesna AS | Wholesale & retail | 2005 |
| Fso Invest AS | | 2014 |
| Fundi AS | Health & social care | 2007 |
| Funksjonell Trening Og Fysioterapi Lillehammer AS | Health & social care | 2013 |
| Furulund Senter AS | Real estate | 1993 |
| Furusæter Invest AS | | 2021 |
| Fyrings Da | Information & communication | 2026 |
| Fysioterapeutenes Da | Education | 2011 |
| FÂR Norway AS | Manufacturing | 2012 |
| Få Det På AS | Wholesale & retail | 2025 |
| Fåberg Vestfjellveger SA | Real estate | 1976 |