| Askim Hus AS | Construction | 2006 |
| Askim Hus Og Hagearbeid AS | Other services | 2024 |
| Askim Kjøleservice A/S | Construction | 2000 |
| Askim Kro AS | Hospitality | 2001 |
| Askim Kulturhus AS | Real estate | 2000 |
| Askim Legesenter Da | Health & social care | 2004 |
| Askim Låsservice AS | Manufacturing | 2008 |
| Askim MC AS | Wholesale & retail | 2023 |
| Askim Mekaniske Verksted AS | Manufacturing | 2008 |
| Askim Og Mysen Kiropraktorklinikk AS | Health & social care | 2016 |
| Askim Pizza AS | Hospitality | 2017 |
| Askim Regnskapsteam AS | Information & communication | 2009 |
| Askim Renseri AS | Other services | 2021 |
| Askim Sikkerhetsservice AS | Administrative & support | 2022 |
| Askim Stenindustri AS | Manufacturing | 1998 |
| Askim Tannhelsesenter AS | Health & social care | 2024 |
| Askim Tannlegesenter AS | Health & social care | 2026 |
| Askim Torvstrølag SA | Agriculture & fishing | 1903 |
| Askim Trening Og Helse AS | Arts & recreation | 2007 |
| Askim Treningssenter AS | Arts & recreation | 2014 |
| Askim Øre-Nese-Hals AS | Health & social care | 2020 |
| Askimbyen AS | Professional & scientific | 1998 |
| Askimconsult AS | Professional & scientific | 2021 |
| Askimtanna AS | Health & social care | 2010 |
| Askimtorget Butikkdrift AS | Wholesale & retail | 2006 |
| Askimtorget Drift AS | Real estate | 1991 |
| Askimtorget Holding AS | Real estate | 1998 |
| Atrupat Skomaker AS | Other services | 2022 |
| Austveg & Slåttedalen Kjøletransport Da | Transport & logistics | 1999 |
| Authen Invest AS | Wholesale & retail | 2020 |
| Av Sprinkler AS | Professional & scientific | 2017 |
| Avløps-Prosjektering AS | Professional & scientific | 2023 |
| B & T Teknikk AS | Construction | 2016 |
| B&T Eiendom AS | Real estate | 2026 |
| B.Ø. Holding AS | | 2005 |
| Baba Sushi Askim AS | Hospitality | 2025 |
| Baccara AS | Wholesale & retail | 1986 |
| Baccara Holding AS | Wholesale & retail | 2005 |
| Bakgårdsfestivalen AS | Arts & recreation | 2026 |
| Bakgårdsgastronomi AS | Hospitality | 2018 |
| Bakkegata 1 Bolig AS | Real estate | 2018 |
| Bakkegata 95 AS | Wholesale & retail | 2023 |
| Bakkeliveien 8 AS | Real estate | 2020 |
| Baky AS | Manufacturing | 2026 |
| Balance in Life Scandinavia AS | Wholesale & retail | 2020 |
| Baltnor AS | Other services | 2016 |
| Bamo Laksefiske Ans | Real estate | 2007 |
| Banda Indre Østfold AS | Wholesale & retail | 1991 |
| Bangry Birds AS | Information & communication | 2016 |
| Be@Yourbest AS | Arts & recreation | 2025 |
| Bech Dame- & Herrefrisør AS | Other services | 1998 |
| Bedrifts-Consult AS | Professional & scientific | 1977 |
| Bekkevold Boligutleie AS | Real estate | 2021 |
| Bekkevold Boligutvikling AS | Real estate | 2021 |
| Bekkevold Eiendom AS | Construction | 2007 |
| Bekkhusveien Holding AS | Financial services | 2016 |
| Berg Dental AS | Manufacturing | 2019 |
| Berg Dental Holding AS | Real estate | 2019 |
| Berg Invest & Eiendom AS | Real estate | 2012 |
| Bergard AS | Wholesale & retail | 2024 |
| Bergerkrysset Auto Askim AS | Administrative & support | 1985 |
| BF Motor Ans | Wholesale & retail | 2015 |
| Bidne Invest AS | | 2026 |
| Bilteknikk Askim AS | Other services | 2020 |
| Biobag International AS | Manufacturing | 1993 |
| Birkemo Fysikalske AS | Health & social care | 2015 |
| Bjerkenes Utvikling AS | Information & communication | 2025 |
| Bjørnhaug Multiservice AS | Construction | 2023 |
| BLP Luxepadel Da | Administrative & support | 2025 |
| Bocadillos Service AS | Hospitality | 2024 |
| Bole Norge AS | Wholesale & retail | 1995 |
| Borant AS | | 2026 |
| BR Eriksson Sotebyn AB | Construction | 2006 |
| Brandsrud Bil AS | Other services | 2025 |
| Brannvern Norge AS | Professional & scientific | 2023 |
| Bravo Import Terje Karlsrud & Co Da | | 1982 |
| Brdr Skjolden AS | | 2026 |
| Brenno Og Korsmo Byggservice Ans | Construction | 2000 |
| Brettingen El. AS | Construction | 2022 |
| Brevig & Pedersen Holding AS | Financial services | 2012 |
| Briv Invest AS | Administrative & support | 2022 |
| Bruktbaren Ans | Wholesale & retail | 2002 |
| Bryggerhuset På Jahren AS | Wholesale & retail | 2006 |
| Bråtan Invest AS | | 2024 |
| Brænds Økonomi AS | Professional & scientific | 2004 |
| Brødholt Vest Utvikling AS | Real estate | 2022 |
| Brødrene AS | Other services | 2025 |
| BS Frukt Og Grønt AS | Wholesale & retail | 2026 |
| Buer AS | Manufacturing | 2019 |
| Buer Bygg & Eiendom AS | Construction | 2024 |
| Buer Godt Salg AS | Wholesale & retail | 2009 |
| Buersvingen 7 AS | Administrative & support | 2026 |
| Bullberntsen AS | | 2007 |
| Bureau III AS | Professional & scientific | 2007 |
| Bwo Consulting AS | Professional & scientific | 2025 |
| Byggservice Askim AS | Construction | 1999 |
| Byggtre AS | Construction | 2021 |
| Byom AS | Professional & scientific | 2026 |
| Bård Haugen Transport AS | Transport & logistics | 1994 |
| Bæsir AS | Professional & scientific | 2000 |