| Grevik Vei SA | Other services | 1992 |
| Grevikstranda Molo Og Båthavn SA | Arts & recreation | 1957 |
| Grøttås AS | Real estate | 2023 |
| GT Fagmaler AS | Construction | 2021 |
| H W Andersen Holding AS | Construction | 2005 |
| H2-NORWAY AS | Transport & logistics | 1984 |
| Haber AS | Financial services | 1986 |
| Haining AS | Real estate | 2015 |
| Handelshuset Norge AS | Wholesale & retail | 2016 |
| Harunda AS | Professional & scientific | 2006 |
| Haugsjordet 13 AS | Real estate | 2017 |
| Haugsjordet AS | Real estate | 2022 |
| Havfrua AS | Arts & recreation | 2007 |
| Havna Resort Service AS | Hospitality | 2025 |
| Heju Eiendom AS | Real estate | 2012 |
| Heju Invest AS | Construction | 2009 |
| Helt Adekvat AS | Professional & scientific | 2013 |
| Hesnes Kaja II AS | Financial services | 2016 |
| Hko Finans AS | | 2023 |
| Hm-Service AS | Education | 2023 |
| Ho Holding AS | Real estate | 2005 |
| Holistic Group AS | Wholesale & retail | 2013 |
| Holme Padel SA | Arts & recreation | 2022 |
| Holme Tennis SA | Arts & recreation | 2017 |
| Holmen Vann- Og Avløpslag SA | Water & waste | 2017 |
| Holmeveien Veilag SA | Real estate | 2001 |
| Honerødgrenda Utbyggingsselskap SA | Construction | 2025 |
| Hotel Service AS | Professional & scientific | 2021 |
| HW Trading AS | Wholesale & retail | 2020 |
| Idka Holding AS | | 2018 |
| Ioanna Tjøme AS | Wholesale & retail | 2012 |
| Iqc AS | Administrative & support | 2016 |
| Ivers 16 AS | Financial services | 2016 |
| Ivers 19 AS | | 2019 |
| Ivers 22 AS | Professional & scientific | 2020 |
| Ivers 86 AS | Professional & scientific | 2015 |
| Ivers 92 AS | Financial services | 2015 |
| Jan Mundal Transport AS | Transport & logistics | 2005 |
| Janine AS | Professional & scientific | 1992 |
| Jawk AS | Information & communication | 2025 |
| Jenka Drift AS | Transport & logistics | 2006 |
| JH Eiendomsconsult AS | Real estate | 2015 |
| Johnsgård & Fasting Eiendom AS | Real estate | 2022 |
| Johnsgård Eiendom AS | Real estate | 2022 |
| Johnsgård Holding AS | | 2022 |
| Jorad AS | Professional & scientific | 2005 |
| JPM Foto AS | Professional & scientific | 2015 |
| JR Tung Invest AS | | 2021 |
| JS Reitan AS | Transport & logistics | 2023 |
| Jørgensen & Nilsen Flis Ans | Construction | 1998 |
| Kabelkassa AS | Manufacturing | 2019 |
| Kafé Rosso AS | Hospitality | 2024 |
| Kanjoh Holding AS | Construction | 2022 |
| Karess AS | Real estate | 1999 |
| Khoag Invest AS | Professional & scientific | 2015 |
| Kik Holding AS | Real estate | 2013 |
| Kirkebakken 3 Tjøme AS | Real estate | 2008 |
| Kjell Kanten Graveservice AS | Construction | 1998 |
| Kjæretoppen Holding AS | Manufacturing | 2016 |
| Klinikkbygg AS | Agriculture & fishing | 2023 |
| Klostergården Da | Health & social care | 1989 |
| Kmas Eiendom AS | Real estate | 2022 |
| Kode AS | Information & communication | 2024 |
| Kolpus Elektro AS | Construction | 2017 |
| Konbud | Construction | 2004 |
| Kort Applaus Travel AS | Administrative & support | 2021 |
| Kragerø Minilager AS | Real estate | 2008 |
| Krukehavn AS | Arts & recreation | 2016 |
| Kyst Og Sjøservice AS | Construction | 2008 |
| Kystgeita AS | Manufacturing | 2024 |
| Kystutvikling AS | Construction | 2005 |
| Køien AS | Information & communication | 2025 |
| L-M Consult AS | Professional & scientific | 2006 |
| L-M Invest AS | Financial services | 2013 |
| La Mare Norge AS | Wholesale & retail | 2019 |
| Langved Blikkenslagerverksted AS | Construction | 2019 |
| Lena Og Jens Håndverksservice AS | Construction | 2011 |
| Limi Bygg AS | Construction | 2021 |
| Luisa Bygg AS | Construction | 2017 |
| Luisa Eiendom AS | Real estate | 2022 |
| Luisa Holding AS | Construction | 2017 |
| Luisa Trefiberisolering AS | Construction | 2019 |
| Løkken Group AS | | 2025 |
| M&M'Ene AS | Administrative & support | 2005 |
| M-Rep AS | Manufacturing | 2021 |
| Malergaten 1 AS | Real estate | 2025 |
| Mariba AS | Professional & scientific | 2013 |
| Maskin & Emballasje Service AS | Wholesale & retail | 2025 |
| Maslø AS | Real estate | 2006 |
| Mathisen Innovation AS | | 2021 |
| MBL Design AS | Wholesale & retail | 2003 |
| MBV Ventures AS | | 2026 |
| Medø Slipp AS | Manufacturing | 2014 |
| Meinerty Invest AS | | 2022 |
| Merienda AS | Hospitality | 2015 |
| Merienda Eiendom AS | Real estate | 2019 |
| Meta C AS | Other services | 2008 |
| Metrobit AS | Manufacturing | 2012 |
| Mma Auto AS | Wholesale & retail | 2023 |
| Moblo Invest AS | Financial services | 2018 |