| Foerster AS | Real estate | 2000 |
| Fofo AS | Professional & scientific | 2018 |
| Fog of War AS | Arts & recreation | 2022 |
| Fogd Holding AS | | 2025 |
| Fogia Collection Nuf | Wholesale & retail | 2017 |
| Fogk Byggmester AS | Construction | 2023 |
| Fogk Holding AS | Construction | 2025 |
| Fogk Maler AS | Construction | 2023 |
| Foha Holding AS | Real estate | 2016 |
| Foi AS | Wholesale & retail | 2010 |
| Foi Invest AS | | 2023 |
| Foiling Norway AS | Professional & scientific | 2005 |
| Foinco AS | Construction | 1961 |
| Foincodatter AS | Construction | 2022 |
| Fokkeslask AS | | 2025 |
| Fokkeslasken AS | | 2023 |
| Fokserød Holding AS | Real estate | 2016 |
| Fokstuen Holding AS | | 2025 |
| Fokus Digital AS | Information & communication | 2026 |
| Fokus Eiendomsfond Hjemmel AS | Real estate | 2004 |
| Fokus Eiendomsfond Norge I AS | Financial services | 2011 |
| Fokus Eiendomsfond Norge I Holding AS | Real estate | 2010 |
| Fokus Eiendomsfond Norge I Invest AS | Financial services | 2021 |
| Fokus Fund Management Norway AS | Financial services | 2013 |
| Fokus Invest AS | Real estate | 2001 |
| Fokus Nord AS | Wholesale & retail | 2020 |
| Fokus Nordic Asset Management Norway AS | Real estate | 2000 |
| Fokus Nordic Norway Holding AS | Real estate | 2006 |
| Fokus Nordic Operations AS | Professional & scientific | 2004 |
| Fokus Norway Balanced Holding AS | Real estate | 2017 |
| Fokus Norway Balanced Property Fund AS | Financial services | 2014 |
| Fokus Partner AS | Professional & scientific | 2014 |
| Fokus Prosjekt AS | Professional & scientific | 1998 |
| Fokus Publishing AS | Information & communication | 1996 |
| Fokus Rekruttering AS | Administrative & support | 2022 |
| Fokus Solutions AS | Information & communication | 2023 |
| Fokus Trafikkskole AS | Education | 2021 |
| Fokus Øyeklinikk Holding AS | Real estate | 2014 |
| FOKUS1 AS | Professional & scientific | 2003 |
| Fokusfoten AS | Health & social care | 2022 |
| Fokusklinikken AS | Health & social care | 2025 |
| Fola Fola Blakken AS | Information & communication | 2019 |
| Folden Advisory AS | Professional & scientific | 2020 |
| Folden Holding AS | | 2023 |
| Foldin Films AS | Professional & scientific | 2019 |
| Foldneslia Eiendomsselskap AS | Real estate | 2016 |
| Foldvik Holding AS | | 2025 |
| Foleys Høvling AS | Construction | 2015 |
| Folgerø AS | Real estate | 2014 |
| Folgerø Investerer AS | | 2021 |
| Folia Cadunt AS | | 2023 |
| Folie Invest AS | Real estate | 2000 |
| Folie Og Print Ans | Professional & scientific | 2017 |
| Folie-Design AS | Manufacturing | 2008 |
| Foliering & Detailing Senter AS | Professional & scientific | 2015 |
| Folieteknikk AS | Other services | 2023 |
| Foliexperten AS | Professional & scientific | 2018 |
| Folio AS | Information & communication | 2017 |
| Folk & Film AS | Information & communication | 1996 |
| Folk Og Fest Da | Administrative & support | 2006 |
| Folk Optikk AS | Wholesale & retail | 2025 |
| Folka AS | Professional & scientific | 2018 |
| Folka Eiendom AS | Real estate | 2026 |
| Folke Bernadottesvei 4 AS | Real estate | 2012 |
| Folkedata Svein Folkeson AS | Information & communication | 1987 |
| Folkedypet AS | Information & communication | 2026 |
| Folkekinoen AS | Information & communication | 2011 |
| Folkeparken AS | Real estate | 2018 |
| Folkes AS | Real estate | 2005 |
| Folkesky AS | Information & communication | 2014 |
| Folkesson Invest AS | Information & communication | 2021 |
| Folket AS | Hospitality | 2022 |
| Folketeaterbygningen AS | Real estate | 1970 |
| Folketeateret Oslo AS | Arts & recreation | 2007 |
| Folkets Falafel AS | Hospitality | 2018 |
| Folkets Kebab AS | Hospitality | 2015 |
| Folkeuniversitetet AS | Education | 2024 |
| Folkeuniversitetet Fri Undervisning AS | Education | 2025 |
| Folkfika AS | Information & communication | 2024 |
| Folks AS | Administrative & support | 2009 |
| Folks Consulting Group AS | Professional & scientific | 2019 |
| Folkseiendom Utvikling AS | Real estate | 2020 |
| Folksnet AS | Administrative & support | 2025 |
| Folksomt AS | Information & communication | 2023 |
| Folkvang Boligselskap AS | Households | 1979 |
| Folkvard Consulting AS | Professional & scientific | 2023 |
| Follegg & Co Advokatfirma AS | Professional & scientific | 2013 |
| Follegg Yachting AS | Real estate | 2004 |
| Follestad Estate AS | Real estate | 2020 |
| Follestadbakken AS | Real estate | 2019 |
| Follestadbrua AS | Real estate | 2016 |
| Follestadtoppen AS | Real estate | 2015 |
| Follo Aktiv AS | Education | 2014 |
| Follo Kombibygg AS | | 2024 |
| Follo Trapp AS | Wholesale & retail | 2018 |
| Followme Norge AS | Professional & scientific | 2020 |
| Follum Invest AS | Real estate | 2002 |
| Folq AS | Information & communication | 2017 |
| Folstad Gonzalez Språktjenester Ans | Administrative & support | 1995 |
| Folvik Partners AS | | 2026 |