| Viker Omsorg AS | Health & social care | 2023 |
| Vikerfjell 1127 AS | Arts & recreation | 2020 |
| Vikerfjell B&A AS | Construction | 2022 |
| Vikerfjell Eiendom AS | Real estate | 2014 |
| Vikerfjell Forum AS | Real estate | 2011 |
| Vikhammer Handelseiendom AS | Real estate | 2019 |
| Vilomix Norway AS | Manufacturing | 1926 |
| Vinjevoll Invest AS | Real estate | 2015 |
| Vinn Invest AS | Real estate | 2005 |
| Viol AS | | 2024 |
| Viraffen AS | Administrative & support | 2017 |
| Vittco AS | Professional & scientific | 1987 |
| Viul Hovedgård AS | Agriculture & fishing | 1893 |
| Viul Kraft AS | Energy | 1991 |
| Viva Bygg AS | Construction | 2024 |
| Vivus AS | Health & social care | 2022 |
| Vizuell AS | Wholesale & retail | 2009 |
| VN Bygg AS | Manufacturing | 2008 |
| VN Link AS | Manufacturing | 2013 |
| VN Link Holding AS | Manufacturing | 2013 |
| Voge AS | Construction | 2023 |
| Voge Holding AS | Construction | 2023 |
| Voge Rental AS | Administrative & support | 2023 |
| Voiebyen Butikkeiendom AS | Real estate | 2005 |
| Volund Power AS | Construction | 2023 |
| VTH AS | Wholesale & retail | 2015 |
| VVS Varme Og Energi / Anlegg AS | Construction | 2022 |
| Våler Butikkeiendom AS | Real estate | 2005 |
| Vår Mat AS | Wholesale & retail | 2022 |
| Vår Nye Bolig Viken AS | Real estate | 2021 |
| Vårly AS | Real estate | 2017 |
| Wang Toppidrett Ringerike AS | Education | 2024 |
| Wara Prosjektadministrasjon AS | Professional & scientific | 2016 |
| Water Dynamics Technology AS | Professional & scientific | 2023 |
| Wda Byggservice AS | Construction | 2019 |
| Webcom AS | Professional & scientific | 2025 |
| Wedo AS | Education | 2015 |
| West Wermland Montasje AS | Construction | 2013 |
| Westad Eiendom AS | Real estate | 2024 |
| Westbyn Restaurantdrift AS | Hospitality | 2003 |
| WF Bil AS | Wholesale & retail | 2012 |
| WF Eiendom AS | Real estate | 2015 |
| Wilco AS | Manufacturing | 2023 |
| Wild Passion Holding AS | Administrative & support | 2020 |
| Wilson Peak AS | Professional & scientific | 2020 |
| Wingar-Elnes Holding AS | | 2025 |
| Wollebæk Bil AS | Wholesale & retail | 2016 |
| X Anlegg AS | Construction | 2020 |
| Xpadel AS | Arts & recreation | 2021 |
| Xpnd AS | Real estate | 2023 |
| Xtrace AS | Other services | 2024 |
| Ydalus Aviation Consultants AS | Professional & scientific | 2018 |
| Yek Lung Holding AS | Professional & scientific | 2024 |
| Ypsilon Consulting AS | Professional & scientific | 1987 |
| Zelvian AS | Wholesale & retail | 2026 |
| Zeniko AS | Information & communication | 2026 |
| Zenity Group AS | | 2025 |
| Zentech AS | Information & communication | 2025 |
| Zenway AS | Professional & scientific | 2021 |
| Zimply AS | Information & communication | 2026 |
| Ådalsveien 149 AS | Real estate | 2020 |
| Ålesund Handelsbygg AS | Real estate | 2011 |
| Åsane Butikkeiendom Sandefjord AS | Real estate | 2005 |
| Åsatua Naturbarnehage SA | Education | 2003 |
| Ø.I.E. Holding AS | Real estate | 2012 |
| Ødegård Holding AS | Construction | 2008 |
| Øf Invest AS | Financial services | 2005 |
| Økonomiklyngen AS | Education | 2016 |
| Ørje Butikkeiendom AS | Real estate | 2013 |
| Øst Alarm Og Sikkerhet AS | Construction | 1993 |
| Østbråtan Vann Og Avløp Drift SA | Water & waste | 2018 |
| Østerdamveien SA | Real estate | 2019 |
| Østvold Holding AS | | 2003 |
| Øvre Eiker Fjernvarme AS | Energy | 2003 |
| Øvregård Invest AS | Professional & scientific | 2020 |