| Flaget Prosjekt AS | Real estate | 2015 |
| Flataveien 22 AS | Real estate | 2018 |
| Fleximed AS | Wholesale & retail | 2009 |
| Flyplassveien 41 AS | Real estate | 2021 |
| FNC AS | Administrative & support | 2018 |
| Format Design AS | Professional & scientific | 2016 |
| Fornybar Invest AS | | 2025 |
| Fossautoco AS | Other services | 2014 |
| Fremdriftskonsulenten AS | Professional & scientific | 2025 |
| Fritido AS | Wholesale & retail | 2017 |
| Frognes AS | Real estate | 1989 |
| Frognesveien 7 AS | Construction | 2022 |
| Fronius Norge AS | Wholesale & retail | 1992 |
| Fru Wiik Olsen AS | Wholesale & retail | 2017 |
| FST Utvikling AS | Real estate | 2015 |
| Fuglesang Holding AS | | 2023 |
| Funkmodul AS | Real estate | 2023 |
| Furvik AS | Construction | 2026 |
| G & R Eiendom AS | Real estate | 2015 |
| G & R Holding AS | Real estate | 2005 |
| G. Lie AS | Financial services | 2015 |
| G. S. Eiendom AS | Real estate | 2012 |
| Galaxy Pizza Grill AS | Hospitality | 2006 |
| Gamle Banken Frisør AS | Other services | 2021 |
| Gara Eiendom AS | Real estate | 2005 |
| Garnelia AS | Wholesale & retail | 2020 |
| Gevelt Holding AS | Arts & recreation | 2019 |
| Gevelt Invest AS | | 2017 |
| Gevelt Maskin AS | Construction | 2017 |
| Gevelt Maskinutleie AS | Administrative & support | 2025 |
| Geveltseterveien SA | Real estate | 1957 |
| GH Sorgenfri Holding AS | | 2023 |
| Gitterexperten AS | Wholesale & retail | 2012 |
| Gjerberg ELEKTRIKER1 AS | Construction | 2015 |
| Gjestemoen Holding AS | | 2025 |
| Gorud Drift AS | Administrative & support | 2018 |
| Gorud Eiendomsutvikling AS | Real estate | 1987 |
| Gpi Projects AS | Real estate | 2016 |
| Granlia Invest AS | Real estate | 2025 |
| Granmoveien Holding AS | Construction | 2005 |
| Granmoveien Invest AS | Construction | 2020 |
| Grasbekk & Foss Ans | Agriculture & fishing | 2003 |
| Greb Eiendom AS | Real estate | 2026 |
| Grinna Holding AS | | 2019 |
| Gråhund Holding AS | Wholesale & retail | 2022 |
| Grønn Holding AS | Construction | 2016 |
| Gulbrandsen Billakkering Eiendom AS | Real estate | 1991 |
| Gullhaugen Drift AS | Administrative & support | 2016 |
| Gulliksen Prosjekter AS | | 2024 |
| Gungnir Media AS | Information & communication | 2023 |
| GV Ventures AS | Wholesale & retail | 2020 |
| GW Eiendom 1 AS | Real estate | 2026 |
| H - Vinduet Fjerdingstad AS | Manufacturing | 2009 |
| H-Tech AS | Construction | 2013 |
| H. Garaas AS | Transport & logistics | 2018 |
| Haavig AS | Real estate | 2022 |
| Habilbygget AS | Real estate | 2009 |
| Hafskjold VVS AS | Construction | 2023 |
| Hagaseth & Molandsveen Da | Wholesale & retail | 2021 |
| Hals Holding AS | Financial services | 2015 |
| Hammergata 11-13 AS | Real estate | 2023 |
| Hanoc Bil AS | Wholesale & retail | 2021 |
| Harakollen Fus Aktivitetsbarnehage AS | Education | 2019 |
| Harakollen Graveservice AS | Construction | 2013 |
| Harakollen Terrasse AS | Real estate | 2015 |
| Harakollen Utvikling AS | Real estate | 2016 |
| Harald Ringdal AS | Health & social care | 2016 |
| Hask Holding AS | | 2024 |
| Hasselbakken 2 AS | Other services | 2005 |
| Haug Regnskapslag SA | Professional & scientific | 1953 |
| Havneterminalen AS | Real estate | 2018 |
| HCR Drift AS | Construction | 1992 |
| Hein Eiendom AS | Real estate | 1977 |
| Helgheim & Johansen AS | Real estate | 2015 |
| Helgheim VVS AS | Construction | 2018 |
| Hellefoss Book Paper AS | Manufacturing | 2013 |
| Hellefoss Industrieiendom AS | Real estate | 2013 |
| Hellefoss Kraft AS | Energy | 1898 |
| Hellefoss Utvikling AS | Real estate | 2004 |
| Hellefoss Åmot Kultiveringsanlegg SA | Agriculture & fishing | 1992 |
| Hellevad AS | Manufacturing | 2004 |
| Hellik Teigen AS | Water & waste | 1986 |
| Hellik Teigen Eiendom AS | Real estate | 2003 |
| Hellik Teigen Industripark Ans | Real estate | 1998 |
| Hermod Teigen Holding III AS | | 2025 |
| Hermod Teigen Holding IV AS | | 2025 |
| Heva Holding AS | Manufacturing | 2013 |
| Heyerdahl Transport AS | Manufacturing | 2006 |
| Hifisentralen AS | Wholesale & retail | 1995 |
| Highland Park AS | Professional & scientific | 2017 |
| Hill Invest AS | Real estate | 2005 |
| Hilleren Eiendom AS | Real estate | 1996 |
| Hilleren Eiendom Bruveien AS | Real estate | 1996 |
| Hilleren Eiendom Loesmoen AS | Real estate | 2005 |
| Hilleren Eiendom Svinesundsveien 347 AS | Real estate | 2007 |
| Hilleren Eiendom Åserud AS | Real estate | 1998 |
| Himalaya Facility Solutions AS | Professional & scientific | 2025 |
| Hinderveien 6 AS | Real estate | 1986 |
| HKT Eiendom AS | Real estate | 2005 |
| HKT Holding AS | Real estate | 2005 |