| Alula Naturformidling AS | Skien | 2025 |
| Aluwini Holding AS | Oslo | 2022 |
| Alvehetta Fus Barnehage AS | Bjorbekk | 2008 |
| Alven Eventyrbarnehage I Trollvika AS | Grimstad | 2013 |
| Alver Trafikkskole AS | Isdalstø | 2025 |
| Alvheim Barnehage AS | Kløfta | 2022 |
| Alvim Barnehage AS | Sarpsborg | 2013 |
| Am Elektrokompetanse AS | Oslo | 2019 |
| Am Larsen Forlag AS | Trondheim | 2012 |
| Amanda Barnehage SA | Haugesund | 2002 |
| Amandus Barnehage SA | Risør | 1990 |
| Amari AS | Mysen | 2022 |
| Amazing Evolution AS | Sandnes | 2019 |
| Amazing Grapes AS | Kristiansand S | 2012 |
| Amberly Cosmetics AS | Bryne | 2012 |
| Ambisjon Pluss Da | Kristiansand S | 2020 |
| Ambla AS | Helgeroa | 2020 |
| Ambrosia Norge Ans | Nesbru | 1992 |
| American Studies School Ans | Kråkstad | 1995 |
| Ametso Holding AS | Lørenskog | 2022 |
| Amigos Abrakadabra AS | Hvalstad | 2023 |
| Amigos Barnehage Limited Nuf | Hvalstad | 2007 |
| Amigos Duogjegogvito AS | Hvalstad | 2024 |
| Amigos Giraffen AS | Hvalstad | 2024 |
| Amigos Monoliten AS | Hvalstad | 2024 |
| Amigos Småen AS | Hvalstad | 2024 |
| Amigos Småvenner AS | Hvalstad | 2024 |
| Amigos Tornerose AS | Hvalstad | 2024 |
| Amiva AS | Kløfta | 2025 |
| Amma AS | Oslo | 2026 |
| Ampeah AS | Sandnes | 2022 |
| Ample Mentaltrenerne AS | Egersund | 2015 |
| Ampo Holding AS | Fjellhamar | 2014 |
| Amygdala Coaching Og Veiledning AS | Vestfossen | 2020 |
| An E-Academy AS | Gjøvik | 2024 |
| An Eacademy AS | Gjøvik | 2023 |
| An Trøndelag AS | Levanger | 2023 |
| Ananta Balance AS | Drøbak | 2025 |
| Ancha AS | Sandvika | 2014 |
| Andam AS | Oslo | 2024 |
| Andasol AS | Oslo | 2012 |
| Andedammen AS | Oslo | 1997 |
| Anders Aukland AS | Tønsberg | 2025 |
| Anders Beer AS | Oslo | 2025 |
| Anders Muren AS | Trondheim | 2024 |
| Anders Pedersen AS | Kopervik | 2025 |
| Anders S Drift AS | Kopervik | 2026 |
| Andersen Strategy Consulting AS | Oslo | 2005 |
| Andersen Trafikkskole AS | Hesseng | 2021 |
| Andersen Ventures AS | Kristiansand S | 2023 |
| Andrea Isaksen AS | Ålesund | 2023 |
| Andrea Knutsen AS | Skodje | 2018 |
| Andreas Grøgaard AS | Oslo | 2025 |
| Andreas Leknessund AS | Oslo | 2024 |
| Andreas Lycke - Lyckelivet AS | Kolsås | 2023 |
| Andresen Akuttmedisin Og Beredskap AS | Vikersund | 2022 |
| Andromeda AS | Stavanger | 2017 |
| Andromeda Barnehage AS | Oslo | 2022 |
| Andselv Bilimport Og Trafikkskole AS | Rundhaug | 2003 |
| Andungen Barnehage 1. SA | Eidsvoll Verk | 2005 |
| Andungen Barnehage SA | Kristiansand S | 1992 |
| Andungen Barnehage Trondheim SA | Trondheim | 1992 |
| Andvig Consulting AS | Bekkestua | 1988 |
| Andy Pandy Sugar Candy Holding AS | Skjeberg | 2018 |
| Andøya Space Education AS | Andenes | 2000 |
| Ane Kvaale AS | Beitostølen | 2016 |
| Anestua Barnehage AS | Molde | 2022 |
| Anette Og Kjetil AS | Ski | 2008 |
| Angedalen Privatskule SA | Førde | 2013 |
| Angeleers AS | Trondheim | 2016 |
| Angelica Westerberg AS | Drammen | 2026 |
| Angelltrøa Familiebarnehage Da | Trondheim | 2006 |
| Angelskår & Co. AS | Oslo | 2025 |
| Angstportalen AS | Nøtterøy | 2023 |
| Animus Learning School AS | Oslo | 2018 |
| Aniri AS | Trondheim | 2003 |
| Ankerhagen Barnehage SA | Oslo | 1997 |
| Anleggsskolen AS | Sørreisa | 2002 |
| Ann Iren Glimsdal AS | Barstadvik | 2015 |
| Ann-Eva Storm AS | Kvaløya | 2020 |
| Ann-Karin's Trafikkskole AS | Straume | 2016 |
| Anna & Co AS | Inderøy | 2017 |
| Anna Campos AS | Eiksmarka | 2024 |
| Anna Nilssens Minne SA | Haugesund | 2002 |
| Anna Signes Trafikkskole AS | Grimstad | 2021 |
| Anna-Karin Olander | Oslo | 2006 |
| Annabell Stefanussen AS | Bardufoss | 2018 |
| Anne Margrethe's Familiebarnehage AS | Ringebu | 2017 |
| Annemorhuset Barnehage AS | Grimstad | 2004 |
| Annicken Day AS | Oslo | 2014 |
| Anniken Binz AS | Oslo | 2022 |
| Anno AS | Oslo | 2013 |
| Anode Academy AS | Molde | 2021 |
| Anoor AS | Stavanger | 2022 |
| Ans Bøckmann & Markussen Voksenopplæring | Drammen | 1989 |
| Ansgar Bibelskole AS | Kristiansand S | 2005 |
| Ansgar Høyskole AS | Kristiansand S | 2005 |
| Ansgarskolen AS | Kristiansand S | 2005 |
| ANSO5 AS | Kråkerøy | 2010 |
| Ansvarlig Helse AS | Jar | 2009 |