| 4MYHRE AS | | 2020 |
| 4R Eiendom AS | Real estate | 2026 |
| A & Birger Lunke AS | Professional & scientific | 1963 |
| A. Fleischer Eiendom AS | Real estate | 2019 |
| A. Fleischer Holding AS | Construction | 2022 |
| A/S Østlendingen | Information & communication | 1921 |
| Aai AS | Real estate | 2020 |
| Aamodt Søsknene Da | Agriculture & fishing | 2011 |
| Aaseth Dagligvare AS | Wholesale & retail | 2017 |
| Activia Legesenter AS | Health & social care | 2005 |
| Adam Rochon Bygg Og Anlegg AS | Construction | 2021 |
| Adiaco AS | Professional & scientific | 2025 |
| Adventure Event AS | Professional & scientific | 2017 |
| Advokat Jonny Holen AS | Professional & scientific | 2005 |
| Advokatfirmaet Hartz & Co AS | Professional & scientific | 2018 |
| Advokatfirmaet Rustad Og Borg AS | Professional & scientific | 2018 |
| Ae Bygg Og Malerservice AS | Construction | 2018 |
| Agito Group AS | Real estate | 2001 |
| Agnåsveiene SA | Real estate | 1985 |
| Ahu Invest AS | | 2021 |
| Aimo Holding AS | | 2019 |
| Airfiks AS | Manufacturing | 2020 |
| Akersvegen SA | Real estate | 2021 |
| Akk Holding AS | Real estate | 2006 |
| Aktiv Eiendomsmegling Elverum AS | Real estate | 2014 |
| Aktiv Og Ung Innlandet AS | Health & social care | 2022 |
| Alex Al Sha Ban Frisør AS | Other services | 2025 |
| Alex Rørservice AS | Construction | 2025 |
| Alfarheim Eiendom AS | Real estate | 2002 |
| Alfarheim Medisinske AS | Health & social care | 2023 |
| Alis Galleri AS | Professional & scientific | 2026 |
| Allma AS | Information & communication | 2021 |
| Altu Holding AS | Real estate | 2023 |
| Alu-Glass Rekkverk AS | Wholesale & retail | 2019 |
| Amund Løken AS | Agriculture & fishing | 2023 |
| Ananda Galappaththi-Arachchige Legevirksomhet AS | Health & social care | 2017 |
| Anaxibia Holding AS | | 2021 |
| Andersen Kiropraktorsenter AS | Health & social care | 2023 |
| Andreas Nygaard Holding AS | Real estate | 2021 |
| Andromeda Norge AS | Manufacturing | 2023 |
| Andrå Holding AS | | 2021 |
| Aniko Invest AS | Real estate | 2011 |
| Annestua AS | Wholesale & retail | 2021 |
| Anno Museum AS | Arts & recreation | 2009 |
| Annunaki Holding AS | Hospitality | 2023 |
| Ans Saga Eiendom | Real estate | 1987 |
| Archisys AS | Information & communication | 2024 |
| Arealhagen AS | Real estate | 2019 |
| Arin Eiendom AS | Real estate | 2023 |
| Arøhne AS | Real estate | 2018 |
| AS Eiendomsforvaltning | Real estate | 1973 |
| AS Ekren | Real estate | 1972 |
| AS Elverum Begravelsesbyrå | Other services | 1974 |
| AS Flisa Forretningsbygg | Real estate | 1970 |
| AS Hybelgården | Real estate | 1972 |
| AS Tore Werner Olsen | Real estate | 2017 |
| Asmico AS | Real estate | 1970 |
| Ast-Holding AS | | 2021 |
| Ata Holding 1 AS | | 2021 |
| Atosa & Bita Ans | Hospitality | 2006 |
| Auden Senderud Gravemaskindrift AS | Construction | 1998 |
| Ausa AS | Real estate | 2026 |
| Auto Select AS | Wholesale & retail | 2020 |
| Autopartner Norge AS | Wholesale & retail | 2025 |
| Autorisert Regnskap AS | Professional & scientific | 2012 |
| Autoservice Elverum AS | Other services | 2016 |
| Autoskade Elverum AS | Other services | 2000 |
| Avdovic Medica AS | Health & social care | 2024 |
| Bagaas-Johansen Holding AS | | 2024 |
| Bakke Eiendom AS | Real estate | 1998 |
| Bakkeby AS | | 2023 |
| Baltic Transport AS | Transport & logistics | 2019 |
| Banditz AS | Wholesale & retail | 2024 |
| Bast AS | Construction | 2018 |
| BB Maskindrift AS | Construction | 2014 |
| BBG AS | | 2018 |
| Bekkevoll Eiendom AS | Real estate | 2011 |
| Bekkevoll Transport AS | Transport & logistics | 1989 |
| Bente Skjelstad Svendsen Holding AS | Financial services | 2018 |
| Berger Maskin AS | Agriculture & fishing | 2025 |
| Bernat Tubau Photography AS | Professional & scientific | 2026 |
| Big Fjord AS | | 2026 |
| Bilpleie-Spesialisten AS | Other services | 2011 |
| Bilvarehuset AS | Wholesale & retail | 1994 |
| Birken Company Da | Arts & recreation | 2007 |
| Bjrl Holding AS | Professional & scientific | 2013 |
| Bjølsetgrenda Eiendom AS | Real estate | 2001 |
| Bjølseth Eiendom AS | Real estate | 2017 |
| Bjørkheim Holding AS | | 2020 |
| Bjørn Sæthre AS | | 2005 |
| Bjørnlia AS | Real estate | 2000 |
| Bjørnstad Prosjektering AS | Professional & scientific | 2016 |
| BLS Rail AS | Transport & logistics | 2022 |
| Bmy Holding AS | Real estate | 2020 |
| Bo I Trysil AS | Real estate | 1998 |
| Borg Lismoen Skog AS | Agriculture & fishing | 2021 |
| Borgheim Eiendom Elverum AS | Real estate | 2014 |
| Borgheim Kiosk Ans | Wholesale & retail | 1995 |
| Braaten Invest AS | Administrative & support | 2017 |
| Braten AS | Construction | 2023 |