| Fornebuporten Bolig Utvikling AS | Fornebu | 2017 |
| Fornebuporten Boligtomt S1.1 AS | Fornebu | 2025 |
| Fornebuporten Næring 1 AS | Oslo | 2012 |
| Fornebuporten Næring 2 AS | Oslo | 2012 |
| Fornebuporten Næring 3 AS | Oslo | 2012 |
| Fornebuporten Næring 4 AS | Lysaker | 2012 |
| Fornebuporten Utviklingseiendom AS | Lysaker | 2019 |
| Fornebuveien 1-3 AS | Oslo | 2016 |
| Fornebuveien 1-3 Holding AS | Oslo | 2022 |
| Fornebuveien 1-3 Kontorhotell AS | Oslo | 2022 |
| Fornebuveien 42-48 AS | Oslo | 2016 |
| Fornebuveien 5 AS | Lysaker | 1997 |
| Fornebuveien 7-13 AS | Oslo | 2010 |
| Fornebuveien AS | Oslo | 2016 |
| Fornebuveien Boligutvikling AS | Oslo | 2024 |
| Fornebuveien Kontorbygg AS | Oslo | 2016 |
| Fornes Eiendom AS | Grong | 1995 |
| Fornes Eiendom Hegra AS | Hegra | 2021 |
| Forneset Holding AS | Namsos | 2021 |
| Forny Invest AS | Kirkenes | 2011 |
| Fornybar Energi Eiendom Da | Asker | 2009 |
| Fornyerservice AS | Sande I Vestfold | 1993 |
| Fornæss Invest AS | Trondheim | 2005 |
| Forpleiningstjenester AS | Lysaker | 2000 |
| Forr Eiendom AS | Oslo | 2018 |
| Forr-Bo Eiendom AS | Stjørdal | 1985 |
| Forr-Bo Holding AS | Stjørdal | 1989 |
| Forrbo Bolig AS | Stjørdal | 1996 |
| Forrbo Fritid 1 AS | Stjørdal | 2015 |
| Forrbo Fritid AS | Stjørdal | 2015 |
| Forrbo Gruppen AS | Stjørdal | 2014 |
| Forrbo Industrier AS | Stjørdal | 2015 |
| Forrest Holding AS | Melhus | 2020 |
| Forretning Og Eiendom AS | Os | 1988 |
| Forretnings-Bygg AS | Oslo | 2017 |
| Forretningsbygg AS | Alta | 1979 |
| Forretningsbygg AS | Havøysund | 1985 |
| Forretningsbygg Aursnes Da | Sykkylven | 1993 |
| Forretningsbygg Stølen SA | Auklandshamn | 1984 |
| Forretningsføreren AS | Oslo | 2001 |
| Forretningsgarden Kirkevangen AS | Voss | 2012 |
| Forretningsgården Eiendom AS | Sandnes | 2021 |
| Forretningsgården Smedvigen AS | Mjøndalen | 1987 |
| Forretningsgården Vikersund AS | Hønefoss | 1995 |
| Forretningsplassen Eiendom AS | Sørum | 2000 |
| Forretningstrykk Eiendom AS | Bodø | 2022 |
| Forrhågen Utleie AS | Innhavet | 2023 |
| Forsaa Eiendom AS | Oteren | 2024 |
| Forsamlingslokalet Brønnøysund SA | Brønnøysund | 1909 |
| Forsand Trevare AS | Forsand | 2002 |
| Forsbacka Invest AS | Sarpsborg | 2006 |
| Forsberg Eiendom AS | Fredrikstad | 2021 |
| Forsberg Holding AS | Gressvik | 2005 |
| Forsberg Holding Sandefjord AS | Sandefjord | 2014 |
| Forsell Eiendom AS | Torp | 2021 |
| Forselvveien 24 AS | Narvik | 2022 |
| Forselvveien AS | Oslo | 2025 |
| Forsethmoen Utleie AS | Bardu | 2004 |
| Forsetlund Eiendom AS | Manstad | 2011 |
| Forsheim Utviklingsselskap AS | Ankenes | 1990 |
| Forsikringsgården AS | Jøa | 2016 |
| Forskjønnelsen 4 AS | Oslo | 2017 |
| Forskjønnelsen Invest AS | Oslo | 2013 |
| Forskningsparken Drift AS | Oslo | 2001 |
| Forskningsparken Energi AS | Oslo | 2009 |
| Forskningsparken Hus 5 AS | Oslo | 2014 |
| Forskningsveien Holding AS | Oslo | 2016 |
| Forskningsveien II AS | Oslo | 2016 |
| Forsland Holding AS | Sandnessjøen | 2010 |
| Forsmo Eiendom AS | Mo I Rana | 2009 |
| Forstaden AS | Trondheim | 2005 |
| Forstaden Eiendom AS | Oslo | 2019 |
| Forstaden Grua Boligutvikling AS | Oslo | 2020 |
| Forstaden Holding AS | Oslo | 2020 |
| Forstaden Malmgruben Boligutvikling AS | Oslo | 2020 |
| Forstaden Sørli Boligutvikling AS | Oslo | 2020 |
| Forstadsutvikling AS | Oslo | 2017 |
| Forstmester Mejdells Veg 1B, C Og D Da | Elverum | 2026 |
| Forsvarsprodukter AS | Lierstranda | 2025 |
| Forsveien 17 AS | Bodø | 2015 |
| Forsåvassdragets Elveeierlag SA | Ballangen | 2015 |
| Forsøket 12 AS | Tromsdalen | 2019 |
| Forsøket Boliger AS | Tromsø | 2017 |
| Forsøkslia AS | Trondheim | 2013 |
| Forsøkslia Utvikling AS | Trondheim | 2021 |
| Forsøl Fiskeriservice AS | Forsøl | 1992 |
| Fortaleza Invest AS | Sogndal | 2007 |
| Forte AS | Sandnes | 1997 |
| Forte Eiendom & Drift AS | Kristiansand S | 2026 |
| Fortem Boligutleie AS | Stavern | 2024 |
| Fortem Invest AS | Stavern | 2024 |
| Fortezza Eiendom AS | Kongsvinger | 2017 |
| Forth AS | Oslo | 2012 |
| Fortigo Properties AS | Oslo | 2019 |
| Fortis AS | Rådal | 2019 |
| Fortis Invest AS | Vinterbro | 2014 |
| Fortius AS | Rendalen | 1985 |
| Fortius Eiendom AS | Oslo | 1998 |
| Fortius Holding AS | Sandefjord | 2005 |
| Fortius Invest AS | Borgenhaugen | 2004 |