| All Risk Management AS | Health & social care | 2015 |
| Allodium AS | Real estate | 2016 |
| Allseas Engineering BV | Professional & scientific | 2003 |
| Allseas Marine Contractors S a | Transport & logistics | 1998 |
| Allseas Norway AS | Mining & quarrying | 2012 |
| Allstar AS | | 2025 |
| Alltinor AS | Transport & logistics | 2025 |
| Allton A1 500 AS | Professional & scientific | 2026 |
| Allton AS | Professional & scientific | 2005 |
| Allton Norway AS | Professional & scientific | 2005 |
| Almar Invest AS | Real estate | 2011 |
| Alpha Proxima AS | Professional & scientific | 2005 |
| Alpin Hytteutvikling Nuf | Real estate | 2005 |
| Alstein AS | Professional & scientific | 2024 |
| Alt Med Hus Og Hage AS | Construction | 2020 |
| Alter Ego AS | Professional & scientific | 2023 |
| Altmuligmann 1 AS | Construction | 2013 |
| Altum Invest AS | Real estate | 2017 |
| Alu Invest AS | Real estate | 2014 |
| Alu Rehab Invest AS | Financial services | 2016 |
| Alven AS | Real estate | 2007 |
| Amai Familywear AS | Professional & scientific | 2023 |
| Amazing Evolution AS | Education | 2019 |
| Ambie AS | Mining & quarrying | 2023 |
| Amdosa AS | | 2021 |
| Amedia Annonse Rogaland AS | Professional & scientific | 2022 |
| Amflow Norge AS | Professional & scientific | 2011 |
| Amiga Da | Professional & scientific | 2005 |
| Amo Invest AS | Real estate | 2014 |
| Amoa Holding AS | Administrative & support | 2023 |
| Ampeah AS | Education | 2022 |
| Amundsen Spesial Kvadrat AS | Wholesale & retail | 2015 |
| Amvil Invest AS | | 2021 |
| An Nam Eiendom AS | Real estate | 2023 |
| An Nam Holding AS | Hospitality | 2021 |
| An-Z Sar Aviation AS | Wholesale & retail | 2012 |
| Anbjørn Ådland Nuf | Professional & scientific | 2005 |
| Anda Utvikling AS | Real estate | 2016 |
| Anders Stensland AS | | 2020 |
| Andersen & Berg Ans | Wholesale & retail | 1996 |
| Andersen & Co Ans | Construction | 1979 |
| Andes Ull AS | Wholesale & retail | 2026 |
| Andre Auestad AS | Wholesale & retail | 2022 |
| Andrik Consulting AS | Professional & scientific | 2013 |
| Ane Otteren Holding AS | Real estate | 2011 |
| Anfindsen AS | Real estate | 2006 |
| Anfindsen Brygge AS | Real estate | 2006 |
| Anfinsen Ernæring AS | Health & social care | 2025 |
| Angell Bygg AS | Construction | 2018 |
| Angi Renovation AS | Construction | 2018 |
| Angianna AS | Construction | 2019 |
| Anhe Holding AS | | 2024 |
| Anko AS | Professional & scientific | 1999 |
| Anko Vekst AS | | 2014 |
| Anlegg & Maskin Utleie AS | Administrative & support | 2002 |
| Anleggsgartnerfirma Skretting Ans | Administrative & support | 1994 |
| Anleggsgartnermester Sømme AS | Administrative & support | 2021 |
| Anleggssystemer AS | Wholesale & retail | 1986 |
| Anna Renhold &Bygg AS | Administrative & support | 2025 |
| Annabelle AS | Wholesale & retail | 2009 |
| Anne Karin Invest AS | Administrative & support | 2023 |
| Anne På Landet Frisør AS | Other services | 2018 |
| Annes Hårdesign Sandnes AS | Other services | 2014 |
| Annkat Invest AS | | 2026 |
| Anr Systems AS | Professional & scientific | 2005 |
| Ans Sjøveien 34 | Real estate | 1987 |
| Ansel AS | Professional & scientific | 2024 |
| Ansit AS | | 2025 |
| Ansoma AS | Financial services | 2012 |
| Anssec Holding AS | Real estate | 1995 |
| Antenor-Otg AS | Information & communication | 2003 |
| Antex AS | Financial services | 2014 |
| Antik & Auksjon AS | Wholesale & retail | 1987 |
| Antonio Associates Limited | Administrative & support | 2012 |
| Anytail AS | Wholesale & retail | 2018 |
| Aot AS | | 2022 |
| Ap Investments AS | | 2018 |
| Ap Transport AS | Transport & logistics | 2015 |
| Apac Jæren AS | | 2025 |
| Apache Eiendom AS | Real estate | 2020 |
| Aph Holding AS | Information & communication | 2017 |
| Apnea Boreal AS | Education | 2023 |
| Apollo Hårsenter Sandnes AS | Other services | 2025 |
| Appeal Frisør Hana AS | Other services | 2020 |
| Applied Carbon Utilisation & Storage AS | Professional & scientific | 2020 |
| Apply Consultants Limited | Professional & scientific | 1995 |
| Appventure AS | Information & communication | 2021 |
| Apr Lager Sandnes AS | Transport & logistics | 2017 |
| Apr Norge AS | Transport & logistics | 2008 |
| Aqm AS | | 2003 |
| Aqualogic AS | Wholesale & retail | 2005 |
| Ar Auto AS | Wholesale & retail | 2022 |
| Ar-Distribution Da | Wholesale & retail | 2009 |
| Arb Investment Group AS | | 2026 |
| Arbeidsklærsenteret JKK AS | Wholesale & retail | 2007 |
| Arbeidslink AS | Information & communication | 2026 |
| Arch AS | Real estate | 2015 |
| Arch Finans AS | Professional & scientific | 2009 |
| Archer AS | Mining & quarrying | 1986 |
| Archer Consulting AS | Administrative & support | 2013 |