| Visyn AS | Professional & scientific | 2000 |
| Vital Ernæring AS | Wholesale & retail | 2005 |
| Vivibene AS | Wholesale & retail | 2019 |
| Vivida AS | Professional & scientific | 2024 |
| Vo Holding AS | | 2014 |
| Von Hanno AS | Information & communication | 2020 |
| VTR 392 Holding AS | | 2023 |
| Vue Mer AS | Professional & scientific | 2019 |
| Vår Holding AS | Financial services | 2020 |
| W-Abbor AS | Professional & scientific | 2022 |
| Walden AS | Professional & scientific | 2014 |
| Walk-In Closet AS | Wholesale & retail | 2012 |
| Walumani Partners AS | | 2019 |
| Waterhammer AS | Professional & scientific | 2008 |
| Waverly AS | Real estate | 2014 |
| Wca Holding AS | | 2026 |
| Wdi Bygg AS | Construction | 2013 |
| Weddingpath AS | Information & communication | 2020 |
| Wellinor Brands AS | Wholesale & retail | 2020 |
| Wellinor Invest AS | Wholesale & retail | 2020 |
| Wellness Consult AS | Health & social care | 2005 |
| Wessto AS | Real estate | 2005 |
| Westra Engineering AS | Professional & scientific | 1997 |
| Wethe Holtskog Frostad Industrier AS | Transport & logistics | 1990 |
| WH Eiendom AS | Real estate | 2020 |
| What If Invest AS | | 2021 |
| White Shoes Invest AS | Financial services | 2015 |
| Wiermyhr AS | Real estate | 2017 |
| Wildcat Invest Da | Real estate | 2001 |
| Wingman AS | Professional & scientific | 2017 |
| Wohali AS | Information & communication | 2014 |
| Woldøen Holding AS | Real estate | 2009 |
| Worksonland Arkitektur Og Landskap AS | Professional & scientific | 2015 |
| WS Bygg AS | Construction | 2023 |
| X2X Holding AS | | 2026 |
| Yugen AS | | 2022 |
| Z Invest AS | | 2024 |
| Zamil Bærum AS | Other services | 2025 |
| Zelo Nett Ltd Nuf | Professional & scientific | 2008 |
| Zetare Holding AS | Hospitality | 2013 |
| Zitas AS | Financial services | 2007 |
| Zummit Consulting AS | Professional & scientific | 2022 |
| Åeiendom AS | Real estate | 2012 |
| Årrundveien 11C AS | Real estate | 2019 |
| Øivind Fjeld Bygg Og Tømrermester AS | Construction | 2000 |
| Øra Developers AS | Administrative & support | 2021 |
| Østlandsprosjekt AS | Real estate | 2023 |
| Øverland Andelslandbruk SA | Agriculture & fishing | 2006 |
| Øverland Barnehage AS | Education | 2005 |
| Øverland Bevertning AS | Hospitality | 1996 |
| Øvre Gjøvik Gård AS | Real estate | 2005 |