| Exept AS | Professional & scientific | 2024 |
| F.A.Bjerke Holding AS | | 2018 |
| Fanebust Holding AS | Real estate | 2015 |
| Fanebust Maskin AS | Construction | 2006 |
| Feiring Vestfold AS | Mining & quarrying | 2011 |
| Ferda Caravan Service Tønsberg AS | Other services | 2025 |
| Ferox AS | Real estate | 2012 |
| First Auto Tønsberg AS | Wholesale & retail | 2026 |
| Fjordgaten 2 AS | Real estate | 2000 |
| FK Vedlikehold AS | Administrative & support | 2025 |
| Fladberg Holding AS | Real estate | 2007 |
| Flaminco AS | Administrative & support | 2025 |
| Flyplassveien 2 AS | Real estate | 2003 |
| Flyvedyktig AS | Education | 2023 |
| Flått Eiendom AS | Real estate | 2015 |
| Foodstuff Import AS | Wholesale & retail | 2013 |
| Format Eiendom AS | Professional & scientific | 2001 |
| Fox Bygg AS | Construction | 2019 |
| Fox Group AS | Real estate | 2009 |
| Frank Og Tommys Vaktmesterservice Ans | Administrative & support | 2000 |
| Freberg Invest AS | | 2023 |
| Frequentis Recording AS | Information & communication | 2022 |
| Frico AS | Construction | 1994 |
| Frico Eiendom AS | Real estate | 2004 |
| Frico Entreprenør AS | Construction | 1995 |
| Frico Holding AS | Construction | 1996 |
| Frico Teknik & Formställning AB | Wholesale & retail | 1997 |
| Frico Transport AS | Transport & logistics | 2008 |
| Frico Undrumsdal AS | Real estate | 2010 |
| Frico Uthyrning AB | Administrative & support | 2013 |
| Frico Utleie AS | Administrative & support | 2005 |
| Færder Sem Tønsberg Begravelsesbyrå Vestfold AS | Other services | 2015 |
| Gamle Ramnesvei 38 AS | Real estate | 2013 |
| Ge-Mo AS | Manufacturing | 2022 |
| Ge-Mo Eiendom AS | Real estate | 2022 |
| Geoingeniørene AS | Professional & scientific | 1999 |
| Goodtimes AS | Real estate | 2005 |
| GP13 Invest AS | Real estate | 2020 |
| Greve Biogass AS | Manufacturing | 2013 |
| Grimestadveien Vest AS | Real estate | 2017 |
| Grorud Ground AS | | 2020 |
| Hageveien 2 AS | Real estate | 2021 |
| Hairstory Sem Frisør AS | Other services | 2020 |
| Hammern Holding AS | Real estate | 2020 |
| Harpunveien 3 AS | Real estate | 1987 |
| Heen Bygg AS | Construction | 2017 |
| Henriksen Transport AS | Transport & logistics | 2025 |
| Hesby Lakkering AS | Other services | 2006 |
| HHL Holding AS | Construction | 2013 |
| Hjemseng Brygge AS | Real estate | 2017 |
| Hjemseng Båthavn AS | Arts & recreation | 1972 |
| Hoppfly AS | Administrative & support | 2006 |
| Hudlegekontoret AS | Health & social care | 2025 |
| Husdyr Systemer AS | Wholesale & retail | 1992 |
| Hvittingen Eiendom AS | Real estate | 2019 |
| Hydraulic Service AS | Manufacturing | 2005 |
| Hydromagic Farms Norge AS | Agriculture & fishing | 2020 |
| Høgfoss AS | | 2005 |
| Høyt Under Taket Tønsberg AS | Arts & recreation | 2018 |
| Ifokus Økonomi AS | Professional & scientific | 2006 |
| Imer Invest AS | Financial services | 2005 |
| In-Go AS | Wholesale & retail | 2023 |
| Ingeniørservice AS | Professional & scientific | 1998 |
| Instant Delivery AS | Transport & logistics | 2022 |
| Inventa Ans | Real estate | 2001 |
| Inventa AS | Construction | 2015 |
| Inventa Eiendom AS | Real estate | 1999 |
| Inventa Eiendom Bygg 7 AS | Construction | 2021 |
| Inventa Entreprenør AS | Construction | 2016 |
| Iridium AS | | 2020 |
| Ix Software AS | Information & communication | 2019 |
| Ja Skilter AS | Professional & scientific | 1986 |
| Ja-Invest AS | | 2022 |
| Jafs Sem AS | Hospitality | 2013 |
| Jan Stendahls Åkeri AB | Transport & logistics | 1996 |
| Jarlsberg Arena AS | Arts & recreation | 1996 |
| Jarlsberg Bygg Og Eiendom AS | Construction | 2021 |
| Jarlsberg Hangar Ba | Real estate | 2000 |
| Jarlsberg Hesteklinikk AS | Professional & scientific | 1998 |
| Jarlsberg Hestesport AS | Wholesale & retail | 2007 |
| Jarlsberg Holding AS | Administrative & support | 2016 |
| Jarlsberg Invest AS | | 2021 |
| Jarlsberg Konferansesenter AS | Administrative & support | 2007 |
| Jarlsberg Luftsportssenter AS | Arts & recreation | 2013 |
| Jarlsberg Trav Eiendom AS | Real estate | 2015 |
| Jarlsberg Travbane Eiendom AS | Real estate | 2013 |
| Jarlsberg Travbane Utvikling AS | Real estate | 2016 |
| Jarlsberg VVS AS | Construction | 2021 |
| Jarlsbergs Meny AS | Real estate | 1994 |
| JB Gruppetimesenter Da | Arts & recreation | 2025 |
| JB Gruppetimesenter Norge AS | Arts & recreation | 2026 |
| JMP Bygg AS | Construction | 2025 |
| Johannessen Prosjekttjenester AS | Professional & scientific | 2020 |
| John Fadum AS | Construction | 1971 |
| John Fadum Eiendom AS | Construction | 2008 |
| John Fadum Holding AS | Construction | 2005 |
| Jørn Myhre Invest AS | | 2020 |
| K-Tec AS | Construction | 1997 |
| K. Lie Holding AS | | 2013 |
| Kareen G Holding AS | | 2025 |