| Grønntransport Og Handel AS | Transport & logistics | 2024 |
| Grønt Fokus AS | Wholesale & retail | 1996 |
| Grønt Lager AS | Real estate | 2026 |
| GS Eiendom Forus AS | Real estate | 2011 |
| Gse AS | Financial services | 2014 |
| GT Kirkeby AS | Real estate | 2017 |
| Gta Sørlandsbudet AS | Transport & logistics | 2024 |
| GTN Holding AS | Real estate | 2021 |
| Gto Enter AS | Administrative & support | 2024 |
| GTS Anlegg AS | Construction | 2013 |
| Gts-Invest AS | Real estate | 2018 |
| Gtø Eiendom AS | Real estate | 2022 |
| Gtø Holding AS | Real estate | 2018 |
| Gudbrandsneset AS | Professional & scientific | 2011 |
| Gul Bil.No AS | Education | 2011 |
| Guldhaug Hansen Holding AS | Financial services | 2013 |
| Guldmandsveien Bolig AS | Real estate | 2019 |
| Gull Kommunikasjon AS | Professional & scientific | 2025 |
| Gull Saks Frisørsalong AS | Other services | 2013 |
| Gullaas AS | | 2009 |
| Gullbillett AS | | 2025 |
| Gullvegen AS | Professional & scientific | 2026 |
| Gulvgruppen Holding AS | Real estate | 2013 |
| Gumpen Bileiendom AS | Real estate | 2018 |
| Gumpen Bileiendom Holding AS | Real estate | 2018 |
| Gumpen Eiendom AS | Real estate | 2002 |
| Gumpen Holding AS | | 2022 |
| Gumpen Motor AS | Other services | 1988 |
| Gumpen Skade Og Bilpleie AS | Other services | 2001 |
| Gumpens Auto AS | Other services | 2002 |
| Gumpens Auto Vest AS | Other services | 1987 |
| Gumpens Auto Øst AS | Other services | 2009 |
| Gumpens Bilutleie AS | Real estate | 1973 |
| Gumpens Invest AS | Real estate | 2018 |
| Gumpens Utleie AS | Administrative & support | 1983 |
| Gund-Strøm Ans | Construction | 1970 |
| Gunerius Invest AS | Real estate | 2000 |
| Gunstein Myre AS | Information & communication | 2019 |
| Gustav Pedersen Eiendom AS | Real estate | 2007 |
| Gustav Vigelandtunet AS | Real estate | 2019 |
| Gutobi Invest AS | | 2025 |
| Guvi Invest AS | Real estate | 2005 |
| GV Service AS | Manufacturing | 2024 |
| Gvino AS | Hospitality | 2022 |
| Gyberg Lyd AS | Arts & recreation | 2024 |
| Gygt 13 AS | Real estate | 2019 |
| Gyldenløve 13 AS | Real estate | 2019 |
| Gyldenløve Invest AS | Professional & scientific | 2015 |
| Gyldenløves Gate 11 Eigedom AS | Real estate | 2012 |
| Gyldenløvesgate 14 Ans | Real estate | 1995 |
| Gyldenløvesgate 2 Invest AS | Real estate | 2017 |
| Gyldenløvesgate 70 AS | Real estate | 2020 |
| Gyldenløvesgate Holding AS | Real estate | 2006 |
| Gyli Invest AS | Manufacturing | 1990 |
| Gynisør AS | Health & social care | 2018 |
| H a Holding AS | Other services | 2005 |
| H E D Kristiansand AS | Wholesale & retail | 1982 |
| H Haavik Rammer Og Kunst AS | Wholesale & retail | 2005 |
| H Lervik Invest AS | Agriculture & fishing | 2012 |
| H O Holding AS | Real estate | 2005 |
| H Utvikling AS | Real estate | 2026 |
| H-T Invest AS | Real estate | 2019 |
| H-Tec Helge Thoresen | Professional & scientific | 1997 |
| H.A. Invest AS | Professional & scientific | 2020 |
| H.B Capital AS | | 2025 |
| H.B Group AS | | 2025 |
| H.E.M. AS | Financial services | 2005 |
| H.H. Invest AS | Wholesale & retail | 2005 |
| H2B Eiendom AS | Professional & scientific | 1998 |
| H7D Tech AS | Information & communication | 2024 |
| Haarbakkeh Holding AS | | 2019 |
| Haavind Holding AS | | 2025 |
| Haavind Rør Og Dykkerservice AS | Construction | 2024 |
| Habeo AS | Professional & scientific | 1998 |
| Hadouken Holding AS | Real estate | 2017 |
| Haf Engineering AS | Professional & scientific | 2015 |
| Hafa Konsult AS | Professional & scientific | 2013 |
| Hafzi Invest AS | Wholesale & retail | 2005 |
| Hag Invest AS | Real estate | 2007 |
| Haga Turbusser AS | Transport & logistics | 2021 |
| Hagebyvegen 40 Skien AS | Real estate | 2019 |
| Hageli Holding AS | Transport & logistics | 2006 |
| Hagen Min AS | Hospitality | 2020 |
| Hageutvikling AS | Wholesale & retail | 2021 |
| Hahn Fleischbearbeitungs GmbH | Manufacturing | 2001 |
| Hair Salong Kristiansand AS | Other services | 2017 |
| Hairbytasha AS | Other services | 2024 |
| Hairconcept AS | Wholesale & retail | 2017 |
| Hajoma AS | | 2022 |
| Hak Kapital AS | | 2020 |
| Halal Ferskt Kjøtt AS | Wholesale & retail | 2011 |
| Hale Eiendom AS | Manufacturing | 2008 |
| Hali AS | Real estate | 1995 |
| Hallo AS | Information & communication | 2019 |
| Halse Holding AS | Professional & scientific | 2008 |
| Hamburg Holding AS | Professional & scientific | 2017 |
| Hamholding AS | Health & social care | 2023 |
| Hammers Invest AS | Professional & scientific | 2012 |
| Hamnegata Holding AS | | 2023 |
| Hamoco AS | | 2002 |