| Fontura AS | Nøtterøy | 2005 |
| Food Folk Sverige AB | 127 85 Skärholmen | 2018 |
| Food Invest AS | Gjøvik | 2020 |
| Foods AS | Mjøndalen | 2006 |
| Foodstores Børre Og Even Skui Ans | Brevik | 1990 |
| Foodture AS | Vestnes | 2022 |
| Football Finance Group AS | Lonevåg | 2021 |
| Fopa Invest AS | Kristiansand S | 2025 |
| For AS | Kolvereid | 2023 |
| For Fremtidige Generasjoner AS | Oslo | 2024 |
| For Future Invest AS | Skien | 2003 |
| For Me AS | Oslo | 2005 |
| For Us AS | Oslo | 2010 |
| Forandre Boligutvikling AS | Fjerdingby | 2016 |
| Forasund Ans | Høvåg | 2007 |
| Forberg Boligutvikling AS | Bø I Telemark | 2019 |
| Forberg Eiendomsselskap AS | Bø I Telemark | 1981 |
| Forberg Holdingselskap AS | Bø I Telemark | 2021 |
| Forberg Utleie AS | Seljord | 2018 |
| Forbes Invest AS | Oslo | 2020 |
| Forbord Invest AS | Verdal | 2005 |
| Forbruken AS | Etne | 2022 |
| Forbundshuset AS | Oslo | 1991 |
| Fordal Eiendom AS | Melhus | 2012 |
| Fordalen Vestre Utmarkslag SA | Singsås | 1986 |
| Fordalsveien A/L | Singsås | 1995 |
| Fordelsen Jan Og Gry Ans | Korgen | 2006 |
| Fordoppa AS | Oslo | 1990 |
| Fordringsfabrikken AS | Røyken | 2002 |
| Fordypningsrommet Fleinvær AS | Fleinvær | 2014 |
| Fore Utvikling AS | Stjørdal | 2021 |
| Foregone Invest AS | Oslo | 2014 |
| Foren Invest AS | Sandnes | 2017 |
| Forenede Ad Eiendom AS | Vollen | 1985 |
| Forenede Industrier AS (Forina) | Oslo | 1874 |
| Forenede Industrier Eiendom AS | Oslo | 2012 |
| Forenede Industrier Finans AS | Oslo | 2016 |
| Forenede Industrier Holding AS | Oslo | 2012 |
| Forenede Industrier Shipping AS | Oslo | 2012 |
| Forenede Industrier Østfold AS | Oslo | 2018 |
| Forenede Plast Eiendom AS | Spydeberg | 2012 |
| Forenedekvartalet AS | Bergen | 2024 |
| Foreningen Väratorp | Dk-2300 København S | 2021 |
| Foreningsgaten 3 Hjemmel AS | Bergen | 2007 |
| Forensis Holding AS | Oslo | 2014 |
| Foresight Finance I Sverige AB | Se-436 58 Hovås | 2021 |
| Forest Invest AS | Melhus | 2005 |
| Forestia Eiendom AS | Braskereidfoss | 2021 |
| Foretakseiendom AS | Oslo | 1968 |
| Foretakskonsulenter AS | Oslo | 1994 |
| Forfang Eiendom AS | Olderdalen | 2025 |
| Forfot-Årbogen Skogsvei SA | Åfjord | 1978 |
| Foric Holding AS | Husnes | 2024 |
| Forinvest Co-Invest I AS | Oslo | 2026 |
| Form & Arkitektur AS | Oslo | 1973 |
| Form Eiendom AS | Oslo | 2016 |
| Form STG13 AS | Oslo | 2022 |
| Forma Bolig AS | Stavanger | 2025 |
| Forma Eiendom AS | Stavanger | 2024 |
| Forma Eiendomsutvikling AS | Hønefoss | 2022 |
| Formann Holding AS | Bergen | 2020 |
| Formannsvei AS | Bergen | 2013 |
| Format Invest AS | Paradis | 1993 |
| Format Invest Eiendom AS | Os | 2013 |
| Formbo AS | Kristiansand S | 2016 |
| Formicus Eiendom AS | Vennesla | 2015 |
| Formidable AS | Kristiansand S | 2017 |
| Formidling AS | Flekkefjord | 2024 |
| Forming-Hobby Holding AS | Orkanger | 2005 |
| Formo AS | Trondheim | 2002 |
| Formo Bolig 1 AS | Trondheim | 2019 |
| Formo Bolig 2 AS | Trondheim | 2019 |
| Formofoss 24/7 AS | Arendal | 2016 |
| Formofoss Næringspark AS | Grong | 2014 |
| Formonde AS | Oslo | 2019 |
| Formtoppen Boligutleie 2 AS | Arendal | 2025 |
| Formtoppen Boligutleie AS | Arendal | 2014 |
| Formue Invest AS | Skien | 2006 |
| Fornamagic Ltd Nuf | Gamvik | 2007 |
| Fornebu 9.3 Utvikling AS | Fornebu | 2026 |
| Fornebu Eiendom AS | Oslo | 1997 |
| Fornebu Gateway AS | Oslo | 2012 |
| Fornebu Hovedgaard AS | Oslo | 2019 |
| Fornebu Invest 38 AS | Oslo | 2024 |
| Fornebu Kontorinvest AS | Oslo | 2018 |
| Fornebu Næring Holding AS | Fornebu | 2002 |
| Fornebu Næringseiendom 1 AS | Oslo | 2007 |
| Fornebu Næringseiendom Ans | Oslo | 1999 |
| Fornebu Og Omegn Eiendom AS | Oslo | 2016 |
| Fornebu Park Hotel AS | Oslo | 1984 |
| Fornebu Senter AS | Oslo | 2007 |
| Fornebu Sentrum AS | Oslo | 2016 |
| Fornebu Sentrum Holding AS | Blomsterdalen | 2019 |
| Fornebu Sentrum Utvikling AS | Oslo | 2017 |
| Fornebu Strandsone AS | Oslo | 2016 |
| Fornebuhøyden Holding AS | Oslo | 2020 |
| Fornebuhøyden Utvikling AS | Oslo | 2022 |
| Fornebuporten Bolig 2 AS | Lysaker | 2012 |
| Fornebuporten Bolig 3 AS | Fornebu | 2012 |
| Fornebuporten Bolig 4 AS | Fornebu | 2017 |