| 153 Invest AS | Real estate | 2026 |
| 55 Invest AS | Real estate | 2025 |
| A W Karlsen AS | Construction | 2007 |
| A.N.L Service AS | Professional & scientific | 2018 |
| A24A Group AS | Information & communication | 1994 |
| AB Retail AS | Wholesale & retail | 2026 |
| Accruity AS | Professional & scientific | 2005 |
| Acmg Holding AS | | 2014 |
| Acta AS | Construction | 2020 |
| Admin Consult AS | Transport & logistics | 2012 |
| Advisia AS | Information & communication | 2024 |
| Advokatfirmaet Berge AS | Professional & scientific | 2009 |
| Advokatfirmaet Torunn Haug AS | Professional & scientific | 2010 |
| Aggahytter AS | Construction | 2001 |
| Agva Renhold AS | Administrative & support | 2022 |
| Ahoy Norge AS | Wholesale & retail | 2021 |
| Aiuto AS | Information & communication | 2026 |
| Aj Boligstyling AS | Professional & scientific | 2018 |
| Akerholt Eiendom AS | Real estate | 2022 |
| Akerholt Holding AS | Professional & scientific | 2019 |
| Akerholt Maskin AS | Wholesale & retail | 2025 |
| Akjo Holding AS | | 2025 |
| Aktiv Helse Holmestrand Da | Health & social care | 2020 |
| Al-Mufarji Maler & Pusserarbeid AS | Construction | 2024 |
| Alanta Holding AS | Professional & scientific | 2017 |
| Alexanders Bygg & Eiendom AS | Construction | 2026 |
| Alexandra Ezhno AS | Professional & scientific | 2022 |
| Allmennlege Tjenester AS | Health & social care | 2023 |
| Alt E Mulig Transport AS | Transport & logistics | 2018 |
| Alte Consulting AS | Transport & logistics | 2015 |
| Amani Holding AS | Information & communication | 2023 |
| Ami Trans AS | Transport & logistics | 1997 |
| Analog Devices Norway AS | Wholesale & retail | 2016 |
| Andreas Johnsen AS | Professional & scientific | 2022 |
| Anneberg Transport Norge AS | Transport & logistics | 2011 |
| Antian AS | | 2021 |
| Aok Eiendom AS | Real estate | 2011 |
| Apea Kapital AS | | 2026 |
| Apotekergården Holmestrand AS | Real estate | 2021 |
| Aradel AS | | 2021 |
| Arbeidsmiljøloven Og HMS AS | Education | 2022 |
| Arctic Grouse AS | Manufacturing | 2020 |
| Area Extreme Productions Nuf | Arts & recreation | 2020 |
| Argoz AS | Professional & scientific | 2024 |
| Argoz Marine AS | Professional & scientific | 2021 |
| Artur Smet AS | Health & social care | 1996 |
| Arvidson Maskin AS | Construction | 2024 |
| AS Odd Fellowhuset Solheim | Real estate | 1988 |
| Aske Investment Group AS | Real estate | 2019 |
| Asker Hage Og Anlegg AS | Construction | 2019 |
| Assoni AS | | 2016 |
| Asterios AS | Professional & scientific | 2021 |
| Audire Da | Information & communication | 2005 |
| Audun Aaland AS | Professional & scientific | 2025 |
| Auto Team AS | Other services | 1994 |
| Autosentrum Vestfold AS | Wholesale & retail | 2024 |
| Autotek Bil AS | Other services | 2012 |
| AV9-11T AS | Real estate | 2022 |
| Aven AS | Real estate | 2013 |
| Aven Eiendom AS | Professional & scientific | 2016 |
| Aven Holmestrand AS | Manufacturing | 1968 |
| Awal AS | Real estate | 2005 |
| Awk Eiendom AS | Real estate | 2021 |
| Awk Finans AS | Real estate | 1987 |
| Axen Entreprenør AS | Construction | 2023 |
| Axen Gruppen AS | Construction | 2022 |
| Axen Prosjekt AS | Real estate | 2020 |
| Axm AS | Real estate | 2022 |
| Azam Forvaltning AS | Real estate | 2025 |
| Azam Holding AS | | 2025 |
| Azam Mat AS | Hospitality | 2025 |
| Autocenteret Fjeldstad A/S | Wholesale & retail | 1981 |
| Aø Invest AS | Real estate | 2022 |
| B. Farnes AS | Manufacturing | 2019 |
| B. Marina AS | Manufacturing | 2025 |
| BACHERS DA v/Jon-Einar Hovland og Knut Ole Holten Hovland | Wholesale & retail | 1996 |
| Badger Punch Games AS | Information & communication | 2024 |
| Bains Eiendom AS | Real estate | 2015 |
| Bains Invest AS | Real estate | 2011 |
| Balance AS | Professional & scientific | 2018 |
| Balancia Accounting AS | Professional & scientific | 2026 |
| Ballers for a Day AS | Information & communication | 2021 |
| Barstad Bilvask AS | Real estate | 1968 |
| Barstadveien 10 AS | Real estate | 2023 |
| Barstadveien 14 AS | Real estate | 2019 |
| Barstadveien 3 AS | Real estate | 2021 |
| Barstadveien 4 AS | Real estate | 2009 |
| Barstadveien 8 AS | Real estate | 2019 |
| Barstadveien 8A AS | Real estate | 2026 |
| Barstadveien Eiendom AS | Real estate | 2014 |
| Base Training Club AS | Arts & recreation | 2025 |
| Baussie AS | Wholesale & retail | 2013 |
| Bbo AS | Real estate | 2014 |
| Bea Kompetanse AS | Professional & scientific | 2017 |
| Beachy AS | Wholesale & retail | 2023 |
| Beachy Gruppen AS | | 2024 |
| Bedagelig AS | Administrative & support | 2024 |
| Beezzy AS | Manufacturing | 2026 |
| Bekk Anlegg AS | Construction | 2013 |
| Bekkegata 11 AS | Real estate | 2019 |