| 3ET Management AS | Real estate | 2006 |
| A2 Eiendom AS | Real estate | 2006 |
| Aakerholt Consulting AS | Information & communication | 1999 |
| Aanesland Treindustri AS | Manufacturing | 1989 |
| Aartun Invest AS | Professional & scientific | 2005 |
| Aase Group AS | Wholesale & retail | 2011 |
| Acr Norge AS | | 2019 |
| Adolf Aa Holding AS | Real estate | 2018 |
| Agder Bilutsalg AS | Wholesale & retail | 2019 |
| Agder Byggtjenester AS | Professional & scientific | 2014 |
| Agder Eiendom AS | Real estate | 2002 |
| Agder Elektro AS | Construction | 2013 |
| Agder Gjenvinning AS | Water & waste | 2021 |
| Agder Grossisten AS | Wholesale & retail | 1999 |
| Agder Helsepark AS | Health & social care | 2020 |
| Agder Lunge Og Allergi Senter AS | Health & social care | 2000 |
| Agder Skade & Lakk AS | Other services | 2020 |
| Agder Tomteselskap AS | Real estate | 2006 |
| Agder Vegmerking AS | Construction | 2020 |
| Agder Øyelegesenter AS | Health & social care | 2020 |
| Agderbyen 12 AS | Real estate | 2010 |
| Agderbyen 22 AS | Real estate | 2010 |
| Agderbyen 29 AS | Real estate | 2010 |
| Agderbyen 30 AS | Real estate | 2010 |
| Agderbyen 8 AS | Real estate | 2010 |
| Agdersped AS | Transport & logistics | 2018 |
| Ah Nordheim AS | | 2026 |
| Aksjemoro AS | | 2017 |
| Aktivum Eiendom AS | Real estate | 2016 |
| Aliz Invest AS | Real estate | 2022 |
| Allsweets AS | Wholesale & retail | 2026 |
| Am Engineering AS | Professional & scientific | 2020 |
| Anbr AS | Wholesale & retail | 2019 |
| Annie of Norway AS | Professional & scientific | 2012 |
| Appsens AS | Manufacturing | 2017 |
| Arbeidsklærsenteret Lillesand AS | Wholesale & retail | 2020 |
| Aritec AS | Professional & scientific | 1995 |
| Ark Hage Og Vedlikehold AS | Administrative & support | 2021 |
| Arpuro Labs AS | Manufacturing | 2026 |
| AS Florence Co | Real estate | 1990 |
| AS Kalvild Træsliberi | Real estate | 1888 |
| Asbjørns Bilverksted AS | Other services | 2010 |
| Asko Agder AS | Wholesale & retail | 1976 |
| Assil AS | Real estate | 2007 |
| Atlagon Holding AS | Real estate | 2017 |
| Atlantic Advisory AS | Professional & scientific | 2015 |
| Atm Service Lillesand AS | Manufacturing | 2016 |
| Auds Hudpleie Sørlandssenteret AS | Other services | 2021 |
| Autosenter Lillesand AS | Wholesale & retail | 2023 |
| Avigo Arbeid Og Inkludering AS | Health & social care | 2020 |
| Avigo Barnehage AS | Education | 2020 |
| Avigo Holding AS | Education | 1982 |
| Avigo Kommunale Tjenester AS | Administrative & support | 2020 |
| Avigo Kompetanse AS | Health & social care | 2022 |
| Baard Kvamsø AS | Professional & scientific | 2025 |
| Baardsen Arkitekter AS | Professional & scientific | 2023 |
| Babysteps AS | Wholesale & retail | 2021 |
| Bakstad & Molvik Holding AS | Wholesale & retail | 2022 |
| Bam Technologies AS | Information & communication | 2023 |
| Bang Elektro AS | Construction | 1989 |
| Bang Elektro Eiendom AS | Real estate | 2011 |
| Barnestreker Lillesand AS | Wholesale & retail | 2017 |
| Beateholmtöpfer AS | Professional & scientific | 2025 |
| Beddingen Eiendom AS | Real estate | 2025 |
| Beetutored Service AS | Education | 2024 |
| Bel Air Auto Modalen Larsen Ans | | 1993 |
| Bellevue 2 AS | Real estate | 2014 |
| Bembil AS | | 2025 |
| Bendiks Birkeland Transport Og Sementstøperi AS | Transport & logistics | 1976 |
| Bendiks Eiendom AS | Real estate | 2005 |
| Bendiks Holding AS | Transport & logistics | 2005 |
| Bents Parkettsliping Gulvservice Da | Construction | 1995 |
| Bergshaven 10 AS | | 2013 |
| Bergstø Barnehage SA | Education | 1988 |
| Bergstø Småbåthavn AS | Transport & logistics | 2002 |
| Berits Interiør AS | Wholesale & retail | 2018 |
| Berntsen's Holding AS | Financial services | 2016 |
| Bertrands Klær AS | Wholesale & retail | 2015 |
| Bestm Holding AS | Health & social care | 2018 |
| Betoto AS | Wholesale & retail | 2013 |
| Bevegi AS | Health & social care | 2026 |
| Bewo AS | Hospitality | 2023 |
| Bewo Eiendom AS | Real estate | 2022 |
| Bewo Holding AS | Hospitality | 2005 |
| Bil & Trailer AS | Other services | 2013 |
| Bitfrost AS | Information & communication | 2002 |
| Bitstream IT Consulting AS | Information & communication | 2024 |
| Bjørlykke Bygg & Båtopplag AS | Construction | 2010 |
| Bjørlykke Eiendom AS | Real estate | 1993 |
| Bjørn Egils Malerfirma AS | Construction | 2017 |
| Bjørn Skuggevik AS | Real estate | 2005 |
| Blaa Interiør AS | Wholesale & retail | 2018 |
| Black Bee AS | Information & communication | 2023 |
| Blekastad Holding AS | | 2026 |
| Blindleia Blomster AS | Wholesale & retail | 2025 |
| Blindleia Charter AS | Transport & logistics | 1999 |
| Blindleia Eiendom AS | Real estate | 1950 |
| Blindleia Kiropraktikk AS | Health & social care | 2022 |
| Blindleia Marine AS | Manufacturing | 2023 |
| Blindleia Performance Center AS | Arts & recreation | 2019 |