| Viken Bilutleie AS | Administrative & support | 2023 |
| Viken Eiendomsmegling AS | Real estate | 2004 |
| Viken Grunnarbeid AS | Construction | 2026 |
| Viken Gullsmed Verksted AS | Other services | 2024 |
| Vintergloed AS | Professional & scientific | 2025 |
| Vis Luftteknikk AS | Construction | 2018 |
| Visdomsfasen AS | Education | 2026 |
| Vision Frisører AS | Other services | 2006 |
| Viskr AS | Information & communication | 2025 |
| Vita Kongsberg AS | Real estate | 2007 |
| Viut AS | Information & communication | 2022 |
| Viztek AS | Professional & scientific | 2024 |
| Vliv AS | Real estate | 2009 |
| Voila Margaux AS | Professional & scientific | 2023 |
| Vokser AS | Information & communication | 2017 |
| Vokser Group AS | Information & communication | 2020 |
| Vold Automotive AS | Other services | 2026 |
| Volund AS | Financial services | 2012 |
| Vusaka AS | Wholesale & retail | 2025 |
| Vår Bistro AS | Hospitality | 2016 |
| Warawara AS | Information & communication | 2025 |
| Watch Studios AS | Professional & scientific | 2026 |
| Waycloud Information Technology AS | Information & communication | 2024 |
| Webility AS | Information & communication | 2020 |
| Weseth Glass AS | Construction | 2020 |
| Wessel Invest - Bil AS | Wholesale & retail | 2021 |
| Wessel-Tingby Ortopedi&Undervisning AS | Health & social care | 2024 |
| Westergård Eiendom AS | Real estate | 2020 |
| Westergård Eiendom Holding AS | Real estate | 2020 |
| Westrum Holding AS | | 2023 |
| Weum Invest AS | Real estate | 2022 |
| Wiab AS | Financial services | 2006 |
| Wictus AS | Manufacturing | 2010 |
| Wikerøy Holding AS | | 2025 |
| Wildcat AS | Education | 2017 |
| Windsvoll Eiendom AS | Real estate | 2002 |
| Winow Automation AS | Professional & scientific | 2018 |
| Wirez AS | Wholesale & retail | 2019 |
| Wist AS | Wholesale & retail | 2024 |
| Withs Gate AS | Real estate | 1993 |
| WJ Invest AS | Real estate | 2022 |
| Wolverine Holding AS | | 2025 |
| Wood Oven AS | Manufacturing | 2021 |
| Woody AS | Real estate | 2017 |
| World Wide Minerals AS | Mining & quarrying | 2024 |
| X Solution AS | Professional & scientific | 2022 |
| XL Fritid AS | Transport & logistics | 2015 |
| Ysv Holding AS | | 2018 |
| Zigma Inspection Services AS | Professional & scientific | 2017 |
| Åk Johnsen Invest AS | Financial services | 2005 |
| Åkern Eiendom AS | Construction | 1970 |
| Åsen Foreldrelag SA | Education | 1995 |
| Ø Stordalen Holding AS | | 2021 |
| Ø. H. Regnskap Autorisert Regnskapsførerselskap | Professional & scientific | 2006 |
| Øhrn AS | Water & waste | 2020 |
| Øino Invest AS | Financial services | 2022 |
| Økonomibyrået AS | Professional & scientific | 1989 |
| Ønvik Holding AS | Information & communication | 2021 |
| Ørjan Tveito Holding AS | | 2024 |
| Ørneredet Da | Wholesale & retail | 2004 |
| Øst Regnskap AS | Professional & scientific | 2015 |
| Østbye Holding AS | Manufacturing | 2005 |
| Øverby Skog AS | Agriculture & fishing | 2000 |
| Øverland Eiendom AS | Real estate | 1991 |
| Øystein Garaas Invest AS | Real estate | 1987 |