| Akademiet VGS Bislett AS | Education | 2005 |
| Akademiet Videreutdanning AS | Education | 2024 |
| Akademikerne Pluss AS | Administrative & support | 2018 |
| Akademikliniken Oslo AS | Health & social care | 2011 |
| Akademiordboken AS | Arts & recreation | 2019 |
| Akana Holding AS | Professional & scientific | 2019 |
| Akappa S.R.L. Nuf | Manufacturing | 2019 |
| Akar Food AS | Wholesale & retail | 2014 |
| Akarzo Invest AS | | 2008 |
| Akash Chauhan AS | | 2025 |
| Akb AS | Real estate | 2014 |
| Akb II AS | Real estate | 2014 |
| Akb III AS | Real estate | 2023 |
| Akb Invest AS | | 2025 |
| Akb Investering AS | Professional & scientific | 2016 |
| Akb Regnskap AS | Professional & scientific | 2005 |
| Akba AS | | 2025 |
| Akbg Invest AS | | 2022 |
| Akc AS | Construction | 2024 |
| Akebakken Invest AS | Transport & logistics | 2006 |
| Akebakken Prosjektstyring AS | Professional & scientific | 2023 |
| Akeleie AS | Real estate | 2023 |
| Akemo Group AS | | 2025 |
| Aker Begravelsesbyrå AS | Other services | 2024 |
| Aker Bil AS | Wholesale & retail | 2024 |
| Aker Brygge AS | Real estate | 2005 |
| Aker Brygge Energisentral AS | Energy | 2010 |
| Aker Brygge Kjeveortopedi AS | Health & social care | 2018 |
| Aker Brygge Legesenter AS | Health & social care | 2016 |
| Aker Brygge Marina AS | Real estate | 2012 |
| Aker Brygge Marina Drift AS | Arts & recreation | 2013 |
| Aker Brygge Publishing AS | Professional & scientific | 2019 |
| Aker Brygge Uteareal AS | Real estate | 2013 |
| Aker Brygge Venture Kapital & Kunstforvaltning AS | Wholesale & retail | 2020 |
| Aker Byggsystem AS | Wholesale & retail | 2005 |
| Aker Drift AS | Real estate | 2007 |
| Aker Eiendomskompani AS | Real estate | 1939 |
| Aker Lås Og Nøkkel AS | Wholesale & retail | 2019 |
| Aker P-Drift AS | Transport & logistics | 2003 |
| Aker Rørleggerbedrift AS | Construction | 1991 |
| Aker Rørservice AS | Construction | 2022 |
| Aker Seafoods Denmark | | 1995 |
| Aker Trepleie AS | Administrative & support | 2016 |
| Aker Utvikling AS | Construction | 2001 |
| Aker Yachts AS | Transport & logistics | 2001 |
| Akera Norge AS | Information & communication | 2020 |
| Akerbygg AS | Construction | 2025 |
| Akergren AS | Real estate | 2000 |
| Akerholt Studio AS | Information & communication | 2026 |
| Akers Avis Groruddalen AS | Information & communication | 1959 |
| Akersbakken 12 AS | Real estate | 2020 |
| Akersborg AS | Real estate | 1997 |
| Akersel AS | Hospitality | 2026 |
| Akerselva Kammermusikkfestival Da | Arts & recreation | 2019 |
| Akerselva Kultur SA | Arts & recreation | 2010 |
| Akerselva Mat Og Drikke AS | Hospitality | 2024 |
| Akerselvapsykologene AS | Health & social care | 2021 |
| Akerselven Eiendom AS | Real estate | 2001 |
| Akersgata 11 AS | Real estate | 2007 |
| Akersgata 16 AS | Real estate | 2006 |
| Akersgata 18 AS | Real estate | 1872 |
| Akersgata 20 AS | Real estate | 2016 |
| Akersgata 34-36 AS | Real estate | 2015 |
| Akersgata 51 AS | Real estate | 2019 |
| Akersgata 64/68 AS | Real estate | 2005 |
| Akersgata 73 AS | Real estate | 2006 |
| Akersgata Gestalt Da | Real estate | 2021 |
| Akersgata Kolonial AS | Wholesale & retail | 2018 |
| Akersgata Tannlegekontor AS | Health & social care | 2022 |
| Akersgaten 1-5 AS | Real estate | 2007 |
| Akersgaten 30 AS | Real estate | 1958 |
| Akersgaten 55 AS | Real estate | 1985 |
| Akersgaten 73 B-E AS | Real estate | 2015 |
| Akersgaten 8 AS | Real estate | 1916 |
| Akershave Apartments AS | Real estate | 2001 |
| Akershave AS | Real estate | 2009 |
| Akershave Eiendom AS | Real estate | 2010 |
| Akershaven AS | Information & communication | 2005 |
| Akershus Boliginvest AS | | 2024 |
| Akershus Båt AS | Wholesale & retail | 2009 |
| Akershus Eiendom AS | Real estate | 1992 |
| Akershus Eiendom Holding AS | Real estate | 2007 |
| Akershus Eiendomsdrift AS | Administrative & support | 2008 |
| Akershus Elektro AS | Construction | 1996 |
| Akershus Flis AS | Construction | 2025 |
| Akershus Handelsselskap AS | Hospitality | 1988 |
| Akershus Holding Ltd | | 1997 |
| Akershus Håndtverkstjenester AS | Construction | 1995 |
| Akershus Logistikk Og Konsulenttjenester AS | Real estate | 2024 |
| Akershus Medisinske Senter AS | Health & social care | 2024 |
| Akershus Taxi AS | Transport & logistics | 2018 |
| Akershus Vask AS | Other services | 2009 |
| Akershusgruppen AS | Hospitality | 2018 |
| Akershusgruppen Bidco AS | Hospitality | 2019 |
| Akershusgruppen Grapeco AS | Financial services | 2024 |
| Akershusgruppen Manco AS | | 2021 |
| Akershusgruppen Newco AS | Hospitality | 2026 |
| Akershusgruppen Salg & Booking AS | Hospitality | 2023 |
| Akershusgruppen Topco AS | Hospitality | 2019 |
| Akersposten Media AS | Information & communication | 2016 |