| FN Consult AS | Real estate | 2019 |
| FNG Holding AS | Manufacturing | 2011 |
| Fotograf Kim Holthe AS | Professional & scientific | 1991 |
| Foxy AS | Real estate | 1984 |
| Framheim Consulting AS | Professional & scientific | 2017 |
| Freds AS | Hospitality | 2025 |
| Free the Flat AS | Information & communication | 2026 |
| Frelis Da | Professional & scientific | 2004 |
| Frellumstad AS | Real estate | 2019 |
| Frigg Kitchens AS | Hospitality | 2016 |
| Friis & Foyn Advokatfirma Ans | Professional & scientific | 1989 |
| Friis-Møller Gruppen AS | Information & communication | 2017 |
| Fundtelligence AS | Information & communication | 2026 |
| Furbish AS | Wholesale & retail | 2014 |
| Galaxsea AS | Professional & scientific | 2012 |
| Gamle Ringeriksvei 14 B AS | Real estate | 1984 |
| Garde. AS | Professional & scientific | 2021 |
| Gayartha AS | Real estate | 2025 |
| Gayarthen AS | Real estate | 2025 |
| Geha AS | Real estate | 1994 |
| Genzi Consulting AS | Professional & scientific | 2020 |
| Geo Invest AS | | 2005 |
| Girigiri AS | Information & communication | 2021 |
| Gisholt Eiendom AS | Real estate | 2006 |
| Gjelsvik Consulting AS | | 2022 |
| Gjennomføringsledelse AS | Professional & scientific | 2009 |
| Gjerdrum Racing AS | | 2025 |
| Gjæver Pedersen AS | Arts & recreation | 2005 |
| Glød IT Consulting AS | Information & communication | 2025 |
| Glød Samkraft Assets AS | Wholesale & retail | 2025 |
| Glød Samkraft Energi AS | Wholesale & retail | 2025 |
| Glød Tech Holding AS | Wholesale & retail | 2024 |
| Godager Management AS | | 1968 |
| Gode Busser Ans | Transport & logistics | 1990 |
| Goldspot AS | Professional & scientific | 2026 |
| Gorogoro AS | Arts & recreation | 2022 |
| Grannesveien 11 Og 13 AS | Real estate | 2024 |
| Green Creek AS | | 2023 |
| Green Harvest Invest AS | Financial services | 2005 |
| Grelland AS | Wholesale & retail | 1984 |
| Greverud Helseforum AS | Real estate | 2000 |
| Griffon AS | | 2026 |
| Grit Nation AS | Wholesale & retail | 2021 |
| Gråten AS | Financial services | 2014 |
| Gundersrud Forretningsbygg 2 AS | Real estate | 2020 |
| Gunn Helen Ervik AS | | 2020 |
| Gurid AS | Transport & logistics | 2006 |
| Gurli Freddy AS | Wholesale & retail | 2012 |
| Gustavian AS | Professional & scientific | 2004 |
| Gvaluestone AS | | 2019 |
| Haavik Communication AS | Real estate | 2000 |
| Haaw AS | Information & communication | 2026 |
| Halvorsen Og Printzell Holding AS | | 2005 |
| Halvorsens Bygg Og Eiendom AS | Real estate | 2005 |
| Hancock Holding AS | Manufacturing | 2012 |
| Harmoni Invest AS | Real estate | 2021 |
| Haug Invest AS | Real estate | 2004 |
| Haune Holding AS | Real estate | 2005 |
| Havbjørn Holding AS | Real estate | 2005 |
| Hbcg Investering AS | | 2023 |
| Hbra Holding AS | | 2021 |
| Heavenly Rooms Da | Professional & scientific | 2002 |
| Hei Reach AS | | 2023 |
| Heine AS | Professional & scientific | 2014 |
| Helmen AS | Professional & scientific | 1997 |
| Hemf Holding AS | | 2020 |
| Henlie AS | | 2021 |
| Hightown AS | Professional & scientific | 2020 |
| Hillarious AS | Real estate | 2022 |
| HJC Invest AS | Real estate | 2021 |
| HM Rit AS | Professional & scientific | 1999 |
| Hobbynorge Ans | Manufacturing | 2000 |
| Hojo AS | | 2019 |
| Holmag Eiendom AS | Real estate | 2006 |
| Holmenkollen Medical AS | Health & social care | 2012 |
| Holrok AS | Real estate | 2017 |
| Home and Beauty AS | Wholesale & retail | 2020 |
| Hompen Invest AS | Real estate | 2016 |
| Hopstock Holding AS | Education | 2016 |
| Hot Bolting AS | Manufacturing | 2013 |
| Hovedgårdsstranden Bryggelag SA | Arts & recreation | 1955 |
| HP Byggservice AS | Construction | 2010 |
| Hydra Aktiv AS | Financial services | 2008 |
| Høvding Eiendom AS | Real estate | 2022 |
| If Eiendom AS | Real estate | 2020 |
| Ifh Consulting AS | Professional & scientific | 2018 |
| Im Holdings International AS | Professional & scientific | 2018 |
| Imaginaria AS | Information & communication | 2012 |
| Imset Holding AS | Real estate | 1994 |
| Incorporated Unlimited Worldwide AS | Professional & scientific | 2019 |
| Industriveien 6 Skarnes Da | Real estate | 2020 |
| Inflamed AS | Professional & scientific | 2019 |
| Infoconsult Ans | Information & communication | 1996 |
| Infonor AS | Administrative & support | 1996 |
| Infonor Holding AS | Administrative & support | 2005 |
| Ing. Erik Jonson AS | Professional & scientific | 2016 |
| Inger Holding AS | Wholesale & retail | 2005 |
| Innovekstering | | 2015 |
| Inonoff AS | Information & communication | 1991 |
| Input/Output AS | Information & communication | 2014 |