| Global Link AS | Wholesale & retail | 2023 |
| Gloppe Eiendom AS | Real estate | 2001 |
| Gloppeskogen 24 AS | Real estate | 1995 |
| Gloppeskogen 45 AS | Real estate | 2023 |
| Gloppeskogen Holding AS | | 2025 |
| Gnottene Familiebarnehage Da | Education | 2005 |
| God Fothelse AS | Health & social care | 2026 |
| Godt Lokalt AS | Wholesale & retail | 1991 |
| Godt Voksne Karer AS | Construction | 2019 |
| Gohg Eiendom Da | Real estate | 2010 |
| Goldkeeper AS | | 2020 |
| Golf House AS | Arts & recreation | 2022 |
| Golt AS | Real estate | 2020 |
| Gon Vest AS | Financial services | 2005 |
| Gotia Consulting AS | Real estate | 2005 |
| Grand Holding AS | Real estate | 2006 |
| Grand Hotel Larvik AS | Hospitality | 2004 |
| Grand Hotel Larvik Eiendom AS | Real estate | 2024 |
| Grand Medisinske Senter AS | Health & social care | 2022 |
| Grandkvartalet Eiendom AS | Real estate | 2005 |
| Grandkvartalets Restauranthus AS | Hospitality | 2010 |
| Grasmo Eiendom AS | Real estate | 2016 |
| Gravdal Blikkenslagerverksted AS | Construction | 1987 |
| Green Toolbox AS | Professional & scientific | 2023 |
| Grenland Senteret AS | Real estate | 2015 |
| Gresco AS | Real estate | 2005 |
| Grevleløkka AS | Real estate | 2018 |
| GRG Holding AS | | 2022 |
| Griffenfeldts Gate 11 AS | Real estate | 2022 |
| Grillhuset Larvik AS | Hospitality | 2024 |
| Grinda Utvikling AS | Real estate | 2007 |
| Grindbakken Eiendom AS | Real estate | 2021 |
| Grinden Invest AS | | 2022 |
| Grinden Invest II AS | | 2025 |
| Groove AS | Wholesale & retail | 2024 |
| Græsholt Holding AS | | 2024 |
| Grønlitoppen AS | Real estate | 2019 |
| Grønn Montasje AS | Construction | 2015 |
| Grønt Partner AS | Manufacturing | 2005 |
| Gsi Interiør Ans | Professional & scientific | 1990 |
| Gta Group AS | Real estate | 2026 |
| GTB Interiør AS | Wholesale & retail | 2014 |
| Guardian Advisor AS | Professional & scientific | 2017 |
| Gui AS | Wholesale & retail | 2021 |
| Gullbo Invest AS | | 2019 |
| Gulli Holding AS | | 2021 |
| Gullsmed Rønning AS | Wholesale & retail | 2006 |
| Gulvik Bygg&Montasje AS | Construction | 2021 |
| GULVLEGGER1.NO AS | Construction | 2026 |
| Gummiservice AS | Wholesale & retail | 1987 |
| Gundersen Eiendom AS | Real estate | 1997 |
| Gundersen Elektro Teknikk AS | Professional & scientific | 2026 |
| Guriskogen Barnehage SA | Education | 1994 |
| Gustavsen Rør AS | Construction | 1979 |
| Gustavsen Små Transport AS | Transport & logistics | 2025 |
| Gustavsens Transport AS | Transport & logistics | 1981 |
| Gutterød & Buttedal Eiendom AS | Real estate | 2011 |
| Gyrari AS | Financial services | 2016 |
| Gymnos Fysikalske Institutt AS | Health & social care | 1987 |
| H & Aa Holding AS | | 2023 |
| H & K Sandnes AS | Construction | 1998 |
| H S Odberg Glassmester AS | Construction | 2003 |
| H S Odberg Glassmesterforretning Ans | Construction | 1979 |
| H-A-S.Eiendom AS | Real estate | 2013 |
| H-A-S.Transport AS | Transport & logistics | 2022 |
| Haaka Eiendom AS | Real estate | 2024 |
| Habo Transport AS | Transport & logistics | 2017 |
| Habo Vinduer AS | Wholesale & retail | 2011 |
| Hachan Holding AS | Real estate | 1995 |
| Hafa Elektro AS | Construction | 1990 |
| Hafallen Øvre AS | Construction | 2024 |
| Hagemaskiner Larvik AS | Wholesale & retail | 2010 |
| Hagmar AS | | 2024 |
| Hairport Nordbyen AS | Other services | 1982 |
| Hairport Trend AS | Other services | 1999 |
| Hairstore AS | Wholesale & retail | 2004 |
| Hakalita AS | Financial services | 2022 |
| Hakkebakkeskogen Barnehage SA | Education | 1986 |
| Halibo AS | | 2023 |
| Halland-Invest AS | Information & communication | 2011 |
| Hamdan Holding AS | | 2024 |
| Hammerkvist Mat AS | Wholesale & retail | 2016 |
| Hammerseng-Edin AS | Education | 2016 |
| Hangarveien 5 AS | Real estate | 1998 |
| Hannelore Neumann AS | Health & social care | 2017 |
| Hans Andreas Eie AS | Wholesale & retail | 2017 |
| Hans Gaarder AS | Real estate | 1969 |
| Hans Gaarder Concept Living AS | Real estate | 2020 |
| Hans Gaarder Eiendom AS | Real estate | 1999 |
| Hans Gaarder Eiendom Elveveien 10 AS | Real estate | 2014 |
| Hans Gaarder Eiendom Elveveien 12 AS | Real estate | 2011 |
| Hans Gaarder Eiendom Elveveien 44 AS | Real estate | 2001 |
| Hans Gaarder Eiendom Elveveien 8 AS | Real estate | 2014 |
| Hans Gaarder Holding AS | Real estate | 1989 |
| Hans Gaarder Invest AS | Real estate | 2010 |
| Hans KR Gutterød AS | Agriculture & fishing | 1988 |
| Hansen & Strøm Invest Da | Financial services | 2000 |
| Hansen Manuellterapi Og Fysioterapi AS | Health & social care | 2020 |
| Hanson Holding AS | Financial services | 2005 |
| Hansons Og Larvik Smådyrklinikk AS | Professional & scientific | 2024 |