| Fonna Film AS | Information & communication | 2024 |
| Forlagshuset I Vestfold AS | Information & communication | 2012 |
| Fortuna Trevarefabrikk AS | Manufacturing | 1968 |
| Fossland Eiendom AS | Real estate | 2023 |
| Foxlate Invest AS | | 2026 |
| Foyn Gruppen AS | Manufacturing | 1994 |
| FP Tech AS | Professional & scientific | 2025 |
| Fram Medico AS | Wholesale & retail | 2022 |
| Francois El- Safadi AS | Education | 2012 |
| Frank Brubakken Holding AS | | 2010 |
| Frankendalsveien 101 AS | Real estate | 2023 |
| Frankendalsveien 91 AS | Real estate | 1998 |
| Frantzen Rør AS | Construction | 2021 |
| Franz Gitter AS | Health & social care | 2019 |
| Fredly Omsorg AS | Health & social care | 2025 |
| Fredrik Stangs Gate AS | Real estate | 2019 |
| Freiberg Varmeteknikk AS | Construction | 2016 |
| Freja - Thoresen Transport & Logistics Larvik AS | Transport & logistics | 1990 |
| Fremag Invest & Consulting AS | Professional & scientific | 2001 |
| Frenvikrønningen AS | Real estate | 2004 |
| Fresh Dame & Herrefrisør Ans | Other services | 1989 |
| Frezja Holding AS | Financial services | 2013 |
| Frihals AS | | 2015 |
| Fritzøe Brygge AS | Real estate | 2001 |
| Fritzøe Eiendom AS | Real estate | 2008 |
| Fritzøe Eiendom Utvikling AS | Real estate | 2023 |
| Fritzøe Energi AS | Energy | 2007 |
| Fritzøe Engros AS | Wholesale & retail | 1998 |
| Fritzøe Gård Aktiv AS | Education | 2000 |
| Fritzøe Gård Arena AS | Real estate | 2015 |
| Fritzøe Gård Eiendom AS | Arts & recreation | 2004 |
| Fritzøe Klinikk Allmennleger AS | Health & social care | 2000 |
| Fritzøe Klinikk Spesialister AS | Health & social care | 2017 |
| Fritzøe Nordic AS | Wholesale & retail | 2021 |
| Fritzøe NXT AS | | 2024 |
| Fritzøe Næringseiendom AS | Real estate | 2023 |
| Fritzøe Parkering AS | Real estate | 2023 |
| Fritzøe Skoger Holding AS | Wholesale & retail | 2022 |
| Frode Strøm Alt I Glass AS | Construction | 1998 |
| Fronthouse AS | Wholesale & retail | 2015 |
| Frost AS | | 2025 |
| Frøken B AS | Wholesale & retail | 2012 |
| Frøystveit Betong AS | Construction | 2026 |
| FSV Invest AS | | 2017 |
| Ftth AS | | 2022 |
| Full Funksjon AS | Health & social care | 2020 |
| Furukollen Invest AS | Real estate | 2015 |
| Fuudies AS | Hospitality | 2022 |
| Fysio Eiendom AS | Real estate | 1997 |
| Fysio Helsesenter AS | Health & social care | 2022 |
| Fritzøe Møller AS | Real estate | 1988 |
| Fønhus Maskin AS | Wholesale & retail | 1984 |
| G&R Matteservice AS | Administrative & support | 2013 |
| G&V Group Ans | Manufacturing | 2006 |
| G.Røsholt AS | Construction | 2022 |
| Ga Holding AS | Transport & logistics | 2018 |
| Gagz Eiendom AS | Real estate | 2019 |
| Gagz Invest AS | Wholesale & retail | 2005 |
| Gaia Tech AS | | 2023 |
| Gamle Jegersborg AS | Real estate | 1996 |
| Gamle Kolåsvei AS | Real estate | 2018 |
| Gamle Ravei 205 AS | Real estate | 2022 |
| Gamle Ravei AS | Real estate | 2009 |
| Gapatrosten Barnehage SA | Education | 1995 |
| Garagen Frisør Da | Other services | 2009 |
| Gardindama AS | Wholesale & retail | 2024 |
| Gartnerløkka Eiendom AS | Real estate | 2017 |
| Gassdistribusjon AS | Wholesale & retail | 2020 |
| Gausta Fritidsutleie AS | Real estate | 2020 |
| Gautar Holding AS | | 2008 |
| Gave Og Systua Ans | Wholesale & retail | 1988 |
| GB Rør & Varmeteknikk AS | Construction | 2023 |
| Geca Eiendom AS | Real estate | 2013 |
| Geca Holding AS | Real estate | 2012 |
| Geir Bakken AS | Manufacturing | 2005 |
| Gej Holding AS | | 2021 |
| Gemidan Nmi AS | Water & waste | 1997 |
| Geparden AS | Wholesale & retail | 2022 |
| Get Academy AS | Information & communication | 2016 |
| Get Academy Solutions AS | Information & communication | 2018 |
| Getdeler AS | Wholesale & retail | 2014 |
| Gill and Tonic AS | Professional & scientific | 2022 |
| Giller & Sønn Sveis & Rep AS | Manufacturing | 2003 |
| Gimre Holding AS | Real estate | 2016 |
| Gimsøy Torg AS | Real estate | 2008 |
| Ginstata Nuf | Professional & scientific | 2015 |
| Gjenbrukshuset Festiviteten AS | Real estate | 2020 |
| Gjerdal 14 AS | Real estate | 2022 |
| Gjermundsen Auto Larvik AS | Other services | 1972 |
| Gjerstad Natur- Og Gårdsbarnehage AS | Education | 2020 |
| Gjestrum Larsen Holding AS | Wholesale & retail | 2005 |
| Gjestrum Plastindustri AS | Wholesale & retail | 1995 |
| Gjærdal 4 AS | Real estate | 2002 |
| Gjærdal 5 AS | Real estate | 2025 |
| Gjærdal Eiendom AS | Real estate | 1991 |
| Gjøas Vei 1 Nøtterøy AS | Real estate | 2021 |
| GK Bolig P20 AS | Real estate | 2020 |
| Gla Eiendom AS | Real estate | 2000 |
| Glassfabrikken AS | Manufacturing | 1993 |
| Glassgruppen AS | Construction | 2021 |