| Wet Country Da | Education | 2025 |
| Weyland Holding AS | Real estate | 2013 |
| WHERE2WATCH AS | Information & communication | 2026 |
| White Sun Publishing AS | Information & communication | 2023 |
| Whiteberg Invest AS | | 2022 |
| Wian SA | Education | 2025 |
| Wichman Holding AS | Real estate | 2024 |
| Wichmann Holding AS | Education | 2019 |
| Wichmann Invest AS | Financial services | 2005 |
| Wichmann Kurs & Konsulenttjenester AS | Education | 2019 |
| Wide Eiendom AS | Real estate | 2025 |
| Wigand Consulting Group AS | Professional & scientific | 2007 |
| Wigandgården AS | Real estate | 2007 |
| Wikstrand Handel AS | Wholesale & retail | 2020 |
| Willder Strategy AS | Professional & scientific | 2019 |
| William Glandberger Holding AS | Real estate | 2020 |
| William Hansen Invest AS | | 2005 |
| William Østensen Holding AS | | 2024 |
| Winche-Lancke Holding AS | | 2025 |
| Wind Communication AS | Information & communication | 2001 |
| Windfjord AS | Wholesale & retail | 1994 |
| Windkeeper AS | Construction | 2018 |
| Windkeeper Shipco I AS | Construction | 2021 |
| Windkeeper Shipco II AS | Construction | 2021 |
| Windshear AS | Information & communication | 2026 |
| Wingaard AS | | 2020 |
| Witell AS | | 2025 |
| Wizard Company AS | Wholesale & retail | 2017 |
| Wizardwear. Ans | Professional & scientific | 2013 |
| Wizrd Solutions AS | Information & communication | 2023 |
| Wizzion AS | Professional & scientific | 2019 |
| WJR Holding AS | Financial services | 2017 |
| WK Chartering AS | Transport & logistics | 2022 |
| Wolff Terapi Senter AS | Health & social care | 2025 |
| Wolffs Gate 5 AS | Real estate | 2021 |
| Wolfgang AS | Professional & scientific | 2019 |
| Wolftech Broadcast Solutions AS | Information & communication | 2011 |
| Woods of Bergen AS | Wholesale & retail | 2022 |
| Worktube Norge AS | Administrative & support | 2018 |
| Wove AS | Information & communication | 2021 |
| WOX1 AS | Wholesale & retail | 2022 |
| Wpoint Invest AS | Real estate | 2017 |
| WPS Næringsmegling AS | Real estate | 2017 |
| WTC Ansatte AS | | 2023 |
| Wulvik AS | | 2019 |
| X-Partner Bergen AS | Wholesale & retail | 2007 |
| X3M Holding AS | | 2021 |
| X3M Invest AS | | 2020 |
| Xconnect Solutions AS | Administrative & support | 2024 |
| Xenovert AS | Information & communication | 2024 |
| Xerxes AS | | 2005 |
| Xfix AS | Construction | 2009 |
| Xhibition AS | Real estate | 2018 |
| XL Bemanning AS | Administrative & support | 2015 |
| XL Catlin Services SE Nuf | Financial services | 2016 |
| XL Insurance Company SE Nuf | Financial services | 2025 |
| XL Tak Og Membran AS | Construction | 2018 |
| Xo Import AS | Wholesale & retail | 2003 |
| Xtor AS | | 2023 |
| Xylico AS | Financial services | 2010 |
| Yachticon a. Nagel GmbH | Wholesale & retail | 2011 |
| Yang Tse Kiang AS | Hospitality | 2003 |
| Yani AS | Real estate | 1988 |
| Yava Management AS | Professional & scientific | 2021 |
| Yesonlife AS | Wholesale & retail | 2016 |
| Yfm AS | Financial services | 2018 |
| Yg Invest AS | Real estate | 2021 |
| Yggdrasil Invest AS | | 2019 |
| Yit Infra Norge AS | Construction | 2019 |
| Yngvild Skåtun Hannestad AS | Health & social care | 2012 |
| Yogahuset Fana AS | Education | 2014 |
| Yogarommet AS | Arts & recreation | 2012 |
| Yogendran AS | Professional & scientific | 2012 |
| Yoix Holding AS | Information & communication | 2019 |
| You Know Something Hermano AS | | 2021 |
| Young Dreams Da | Arts & recreation | 2011 |
| Youngberry AS | | 2017 |
| Youwell AS | Information & communication | 2015 |
| Youwell Invest AS | Information & communication | 2022 |
| Ypper AS | Education | 2017 |
| Ypper Gastronomi AS | Hospitality | 2023 |
| Ypper Holding AS | Hospitality | 2022 |
| Yr Arkitekter AS | Professional & scientific | 2017 |
| Yr Eiendom AS | Real estate | 2022 |
| Yrkesbekledning AS | Wholesale & retail | 2020 |
| Ystadveien 1 Holding AS | Real estate | 2021 |
| Ystholmen Felles AS | Financial services | 2018 |
| Yta Invest AS | Wholesale & retail | 1995 |
| Ytre Kandal Kraft AS | Energy | 2002 |
| Ytre Markeveien 39 AS | Real estate | 2010 |
| Ytre Sandviken AS | | 2023 |
| Ytrehus Holding AS | Financial services | 2009 |
| Z Megleren AS | Real estate | 2018 |
| Z-Film AS | Information & communication | 2026 |
| Zachariasbryggen AS | Real estate | 2007 |
| Zahlhuus AS | Professional & scientific | 2006 |
| Zander Kaaes Gate 6 AS | Hospitality | 1960 |
| Zarepta Film Production AS | Information & communication | 2004 |
| Zayor Active AS | Wholesale & retail | 2025 |
| Zee Ploeg AS | Financial services | 2010 |