| Fred Olsen Transport AS | Transport & logistics | 1964 |
| Fred Olsens Gate 5 AS | Real estate | 2006 |
| Fred. Eiendom AS | Real estate | 2020 |
| Fred. Olsen & Co. AS | Administrative & support | 2023 |
| Fred. Olsen 1848 AS | Professional & scientific | 2015 |
| Fred. Olsen AS | Real estate | 1945 |
| Fred. Olsen Flovoltaic AS | Professional & scientific | 2021 |
| Fred. Olsen Insurance Services AS | Professional & scientific | 1959 |
| Fred. Olsen Investments AS | Real estate | 2021 |
| Fred. Olsen Ocean AS | Construction | 1994 |
| Fred. Olsen Ocean Ltd. | Construction | 2000 |
| Fred. Olsen Renewables AS | Professional & scientific | 2021 |
| Fred. Olsen Renewables UK Holding AS | Professional & scientific | 2021 |
| Fred. Olsen Seawind ASA | Professional & scientific | 2001 |
| Fred. Olsen Travel AS | Administrative & support | 1966 |
| Fred. Olsen Windcarrier ASA | Construction | 2005 |
| Fred. Olsen Windcarrier International AS | Construction | 2018 |
| Fred. Olsen Windcarrier Operations AS | Construction | 2018 |
| Fred. Olsens Gate 11 AS | Real estate | 2011 |
| Fred.Olsen Marine Services AS | Construction | 1991 |
| Fredag AS | | 2022 |
| Fredag Den Trettende Holding AS | | 2020 |
| Fredag Holding AS | | 2020 |
| Fredag Oslo AS | Professional & scientific | 2024 |
| Fredager AS | | 2020 |
| Fredagsfilm AS | Information & communication | 2021 |
| Fredbo Eiendom AS | Real estate | 2006 |
| Fredbo Kapital AS | Information & communication | 2020 |
| Fredbobygg AS | Real estate | 2013 |
| Fredbu Management AS | | 2022 |
| Freddy Falch AS | Construction | 2025 |
| Freddy Fuego AS | Hospitality | 2014 |
| Fredenborgsveien 44 AS | Real estate | 2023 |
| Fredeni AS | Wholesale & retail | 2024 |
| Fredenlund AS | Information & communication | 2021 |
| Fredensborg 02 AS | Real estate | 2015 |
| Fredensborg 03 AS | Real estate | 2015 |
| Fredensborg 04 AS | Real estate | 2021 |
| Fredensborg 05 Ans | | 1997 |
| Fredensborg 06 Ans | | 1997 |
| Fredensborg 07 Ans | | 1997 |
| Fredensborg 08 Ans | | 1997 |
| Fredensborg 09 Ans | | 1997 |
| Fredensborg 17 AS | Real estate | 2018 |
| Fredensborg 18 AS | Real estate | 2018 |
| Fredensborg 19 AS | | 2018 |
| Fredensborg 1994 AS | Real estate | 1985 |
| Fredensborg 20 AS | Information & communication | 2023 |
| Fredensborg 21 AS | Information & communication | 2023 |
| Fredensborg 30 AS | Real estate | 2009 |
| Fredensborg 32 AS | Real estate | 2014 |
| Fredensborg AS | Real estate | 1912 |
| Fredensborg Bolig AS | Real estate | 2017 |
| Fredensborg Boligutleie AS | Real estate | 2006 |
| Fredensborg Eiendom AS | Real estate | 2014 |
| Fredensborg Eiendomsselskap AS | Real estate | 2005 |
| Fredensborg Fritid AS | Real estate | 2018 |
| Fredensborg Fritid Flå AS | Real estate | 2022 |
| Fredensborg Fritid Kragerø AS | Real estate | 2020 |
| Fredensborg Horeca AS | Real estate | 2020 |
| Fredensborg Hospitality AS | Hospitality | 2020 |
| Fredensborg Investments AS | Real estate | 2020 |
| Fredensborg Trening AS | Arts & recreation | 2020 |
| Fredensborglp AS | Wholesale & retail | 2018 |
| Fredensborgveien 16 Drift AS | Real estate | 2002 |
| Fredensborgveien 22 Næring AS | Real estate | 2025 |
| Fredensborgveien 24B Ans | Real estate | 1986 |
| Fredensborgveien 29 AS | Real estate | 2005 |
| Frederic M Scandinavien Aps | Administrative & support | 1999 |
| Frederic Productions AS | Information & communication | 2026 |
| Frederic Taillier AS | Professional & scientific | 2018 |
| Fredericia Logistics Denmark II AS | | 2018 |
| Frederik Stangs Gate 11/13 AS | Real estate | 2014 |
| Frederik Stangs Gate 23 AS | Real estate | 2014 |
| Frederik Stangs Gate 25 AS | Real estate | 2014 |
| Frederik Stangs Gate 35 AS | Real estate | 1940 |
| Frederik Stangs Gate 4 Utvikling AS | Real estate | 2021 |
| Frederik Stangsgate 22/24 AS | Real estate | 2005 |
| Frederikke Haider AS | | 2026 |
| Fredfri Invest AS | Financial services | 2005 |
| Fredheim Ans | Real estate | 1997 |
| Fredheimveien 10 AS | Real estate | 2018 |
| Fredholding AS | | 2025 |
| Fredhøi Holding AS | | 1990 |
| Fredjens AS | | 2023 |
| Fredliveien 6 AS | Real estate | 2025 |
| Fredlös Da | Arts & recreation | 2025 |
| Fredora Consult AS | Professional & scientific | 1998 |
| Fredr a Nilsson AS | Wholesale & retail | 1977 |
| Fredrik Andersen Holding AS | | 2022 |
| Fredrik Anfinsen Invest AS | Financial services | 2015 |
| Fredrik Angell Management Consulting AS | Information & communication | 2026 |
| Fredrik AS | | 2026 |
| Fredrik Buck Holding AS | Agriculture & fishing | 2017 |
| Fredrik Evjen Ekli AS | Professional & scientific | 2024 |
| Fredrik Fang Liland Invest AS | | 2021 |
| Fredrik Gjernes AS | Real estate | 2016 |
| Fredrik Gulowsen AS | Professional & scientific | 2014 |
| Fredrik Hagland Holding AS | | 2023 |
| Fredrik Høyer AS | Arts & recreation | 2019 |