| 123 Invest AS | Real estate | 2006 |
| 5TP Invest AS | | 2025 |
| 9910 Invest AS | Real estate | 2014 |
| A Frog in the Fjord AS | Information & communication | 2025 |
| A&M Invest AS | | 2020 |
| A&M Renovering AS | Construction | 2021 |
| A. Ødegårdstuen Holding AS | | 2026 |
| Aasbrenn Kontorplanter AS | Wholesale & retail | 2007 |
| Aasbø Invest AS | Real estate | 2006 |
| Aasoldsen Holding AS | Professional & scientific | 2005 |
| Abox AS | Arts & recreation | 2009 |
| Adamtek AS | Information & communication | 2019 |
| Adv Ole Strømmen Holding AS | | 2024 |
| Aether Performance AS | Information & communication | 2026 |
| Affe AS | | 2026 |
| Agent AS | Professional & scientific | 2024 |
| Agnes AS | Professional & scientific | 2017 |
| AIAI3D AS | Information & communication | 2025 |
| Airbit AS | Wholesale & retail | 2019 |
| Aivil AS | | 2020 |
| Akspro AS | Real estate | 2008 |
| Al Maskin AS | Construction | 2006 |
| Albnor Bygg AS | Construction | 2021 |
| Alial AS | Professional & scientific | 2024 |
| Alpadel AS | Education | 2024 |
| Alt-Mann Eiendom AS | Real estate | 2021 |
| Am Pihl & Co AS | | 2025 |
| Amellos Holding AS | | 2026 |
| Amla Holding AS | | 2021 |
| Amon Group AS | Professional & scientific | 2010 |
| Amperia AS | Wholesale & retail | 2023 |
| Anbefaler.Com AS | Information & communication | 2022 |
| Anders Grytdal AS | | 2025 |
| Anleggsgartner Jan Nilsen AS | Administrative & support | 1993 |
| Antecedent AS | | 2020 |
| Apra AS | Agriculture & fishing | 2024 |
| Arkitektur Og Energi AS | Professional & scientific | 2012 |
| Armand Holding AS | Financial services | 2016 |
| Arne G Hansen AS | Wholesale & retail | 1976 |
| Arne Nordlie AS | Wholesale & retail | 2025 |
| Arness AS | Real estate | 2022 |
| Artmission AS | Real estate | 2004 |
| AS Ferdighus H J Kroken | Real estate | 1971 |
| Atle Ronglan AS | Professional & scientific | 2018 |
| Attinvest AS | | 2022 |
| Autospektrum AS | Wholesale & retail | 2010 |
| Autospektrum Service AS | Other services | 2022 |
| Av Systemteknikk AS | Construction | 2017 |
| Avelenore AS | Manufacturing | 2025 |
| Avende Holding AS | | 2022 |
| Awara AS | Hospitality | 2025 |
| Bajoco Invest AS | Real estate | 2017 |
| Bajoco Invest II AS | Real estate | 2022 |
| Baldebombi AS | | 2023 |
| Barbro Mosseng AS | Professional & scientific | 2016 |
| Barnack Invest AS | Real estate | 2018 |
| Bbe-Elektro AS | Professional & scientific | 2013 |
| Beach R'Us AS | Wholesale & retail | 2023 |
| Bedre Bedrift AS | Professional & scientific | 2018 |
| Belckasp AS | Other services | 2024 |
| Berggrunn AS | Professional & scientific | 2023 |
| Bestia Risk Consulting AS | Administrative & support | 2005 |
| Bilhuset Kolbotn AS | Real estate | 1995 |
| Bim Verdi AS | Administrative & support | 2012 |
| Bioecon AS | Professional & scientific | 2022 |
| Birdiekokken AS | Hospitality | 2025 |
| Birke Invest AS | Administrative & support | 2007 |
| Bjarkøy Holding AS | Real estate | 2005 |
| Bjørn Mølster Holding AS | | 2018 |
| Bjørå Invest AS | | 2025 |
| Bkraft Holding AS | Education | 2017 |
| Blackbird Kapital AS | Financial services | 2020 |
| Ble & Partners AS | Wholesale & retail | 2014 |
| Ble Holding AS | Professional & scientific | 2013 |
| Ble Invest AS | Professional & scientific | 2005 |
| Blom Grafs AS | | 2025 |
| Blooming Holding AS | | 2019 |
| Blue Heaven Holding AS | Professional & scientific | 2020 |
| Blue Note Holding AS | | 2023 |
| Bo IT Da | Information & communication | 2009 |
| Boble Creative AS | Manufacturing | 2023 |
| Bogen Holding AS | Professional & scientific | 2021 |
| Bolig- Og Næringstakst AS | Real estate | 1997 |
| Borgos Designs AS | Professional & scientific | 2025 |
| Borgos Invest AS | Information & communication | 2021 |
| Boto AS | Real estate | 1994 |
| BR Winsnes Graveservice Ans | Construction | 1997 |
| Breathe Norway AS | Professional & scientific | 2013 |
| Bretind of Norway AS | Wholesale & retail | 2022 |
| Broberry AS | Arts & recreation | 2026 |
| Brødrene Larsen VVS AS | Construction | 2000 |
| BVT Holding AS | | 2006 |
| Cafino AS | | 2020 |
| Cami De Cavalls AS | Professional & scientific | 2021 |
| Camps R'Us AS | Education | 2021 |
| Capadyne Systems AS | Manufacturing | 2026 |
| Carina Carl AS | Real estate | 2014 |
| Carpathian Hydro Energy AS | | 2026 |
| Carrara Interiør AS | Construction | 2019 |
| Casino Arrangementer AS | Arts & recreation | 2001 |