| Svelvik Dagligvare AS | Wholesale & retail | 2018 |
| Svelvik Frukt AS | Agriculture & fishing | 2012 |
| Svelvik Graving Og Transport AS | Construction | 1997 |
| Svelvik Grunneierlag SA | Real estate | 1952 |
| Svelvik Helsesenter AS | Health & social care | 2023 |
| Svelvik Hudpleie AS | Other services | 2020 |
| Svelvik Kombibygg 1 AS | Real estate | 2023 |
| Svelvik Kombibygg 2 AS | Real estate | 2023 |
| Svelvik Kombibygg 3 AS | Real estate | 2023 |
| Svelvik Kunstglass AS | Construction | 1989 |
| Svelvik Lagerutleie AS | Real estate | 2013 |
| Svelvik Legesenter AS | Health & social care | 2016 |
| Svelvik Maskin AB Nuf | Wholesale & retail | 2026 |
| Svelvik Maskin AS | Manufacturing | 1995 |
| Svelvik Maskin Holding AS | Manufacturing | 2005 |
| Svelvik Moreller Da | Agriculture & fishing | 2015 |
| Svelvik Mosteri AS | Manufacturing | 2025 |
| Svelvik Næringspark AS | Real estate | 2006 |
| Svelvik Næringstomt 2 AS | Real estate | 2021 |
| Svelvik Næringstomt 4 AS | Real estate | 2021 |
| Svelvik Næringstomt 5 AS | Real estate | 2021 |
| Svelvik Næringstomt 7 AS | Real estate | 2021 |
| Svelvik Oppmåling Og Byggeledelse AS | Professional & scientific | 2012 |
| Svelvik Padelsenter AS | Arts & recreation | 2017 |
| Svelvik Pizzadrift AS | Hospitality | 2017 |
| Svelvik Produkter AS | Health & social care | 1992 |
| Svelvik Tannlegesenter AS | Health & social care | 2014 |
| Svelvik Treningssenter AS | Arts & recreation | 2016 |
| Svelvik Tretek Da | Wholesale & retail | 2016 |
| Svelvik Utvikling AS | Real estate | 2020 |
| Svelvik Varme & Sanitær AS | Construction | 2023 |
| Svelvikhus AS | Professional & scientific | 2022 |
| Svelviksposten AS | Information & communication | 1983 |
| Svelvikstrømmen Helsesenter AS | Health & social care | 2025 |
| Sørøst Betongsaging AS | Construction | 2024 |
| T/B El. Installasjon AS | Construction | 2017 |
| Takstkjeden AS | Professional & scientific | 2020 |
| Takstkjeden Holding AS | Professional & scientific | 2018 |
| Tandberg & Johansson AS | Wholesale & retail | 2016 |
| Tanga AS | Construction | 2023 |
| Tangerud Holding AS | | 2024 |
| Tann Estetikk Klinikk AS | Health & social care | 2017 |
| TB Rørservice AS | Construction | 2017 |
| Tele Team Ans | Administrative & support | 2001 |
| Teltgutta AS | Construction | 2016 |
| Til-Tak AS | Wholesale & retail | 2004 |
| Tinne Holding AS | | 2025 |
| Titan Maskin AS | Construction | 2023 |
| Treadstone AS | Real estate | 2015 |
| Treverk AS | Wholesale & retail | 2017 |
| Trinn for Trinn Entreprenør AS | Construction | 2017 |
| Trinn for Trinn Holding AS | Construction | 2019 |
| Trinn for Trinn Utvikling AS | Real estate | 2020 |
| Triple AS | Professional & scientific | 2013 |
| Trygg Utleie & Transport AS | Administrative & support | 2015 |
| Ukunda Opportunities AS | Real estate | 2020 |
| Upnorth Skincare AS | Wholesale & retail | 2023 |
| Valore Invest AS | Professional & scientific | 2012 |
| Vanguardium Holding AS | | 2025 |
| Vanguardium Utleie AS | Real estate | 2026 |
| Vellekla AS | Construction | 2020 |
| Vestfold Bær Produksjon AS | Agriculture & fishing | 2018 |
| Vetle Bjørnstad AS | | 2021 |
| VGN Works AS | Wholesale & retail | 2021 |
| Vigdal Kioskdrift Ans | Hospitality | 1994 |
| Viken Anleggsupport AS | Professional & scientific | 2023 |
| Villa Rørvik Ans | Hospitality | 1992 |
| Visomi Holding AS | Professional & scientific | 2018 |
| Vitamat AS | Hospitality | 2018 |
| Vivat Crescat Floreat Holding AS | Construction | 2024 |
| Vognmann Knut-Ivar Blom Teibø AS | Transport & logistics | 2026 |
| Voids AS | Information & communication | 2019 |
| Von Barner Invest AS | Wholesale & retail | 2019 |
| Walbergen Holding AS | | 2026 |
| We Two AS | Wholesale & retail | 2024 |
| Welling AS | Professional & scientific | 2005 |
| Wiig-Nejad Invest AS | | 2025 |
| Williksen Forlag AS | Professional & scientific | 2014 |
| Working Capital AS | Health & social care | 2018 |
| Your Headway AS | Professional & scientific | 2020 |
| Østbye Invest AS | Construction | 2024 |
| Østlandstak AS | Construction | 2021 |
| Øverby Entreprenør AS | Construction | 2022 |
| Øverby Gruppen AS | | 2021 |