| 3D Arkitekter AS | Professional & scientific | 1999 |
| A Bø Holding AS | | 2005 |
| A Grivi Holding AS | Real estate | 2017 |
| A. Langkaas & Sønn AS | Transport & logistics | 1981 |
| Aakvik Bygg Og Eiendom AS | Construction | 2012 |
| Abs Smartkraft AS | Professional & scientific | 2022 |
| Active Pluss AS | Real estate | 2009 |
| Advokatene Kåsa Og Nilsen AS | Professional & scientific | 2016 |
| Ae Holding AS | | 2022 |
| Agenda Utvikling AS | Construction | 2018 |
| Ajer Og Berget Da | | 2020 |
| Ajo-Holding AS | | 2025 |
| Akkerhaugen Panorama AS | Real estate | 2022 |
| Alkymia AS | Information & communication | 2001 |
| Almankås Eigedom AS | Manufacturing | 1968 |
| Amcars AS | Wholesale & retail | 2021 |
| Anadrom Elvekartlegging AS | Professional & scientific | 2023 |
| Andra Bygg AS | Construction | 2016 |
| Anne Grete Darrud Holding AS | | 2022 |
| Anne Lises Velvære AS | Other services | 2020 |
| Arialo Drift AS | Wholesale & retail | 2013 |
| Arialo Holding AS | Real estate | 2016 |
| Arkitektum AS | Information & communication | 2015 |
| Arne Mathi AS | | 2020 |
| Astrid Kaasa Invest AS | Hospitality | 2021 |
| At Eiendom AS | Real estate | 2002 |
| Atv Invest AS | Real estate | 2022 |
| Auds Rett Fra Naturen AS | Wholesale & retail | 2018 |
| Augon Myrjord AS | Professional & scientific | 2020 |
| Auto AS | Wholesale & retail | 2015 |
| Autohuset Bø AS | Real estate | 1984 |
| B2 Bø AS | Real estate | 2019 |
| B2 Holding AS | Wholesale & retail | 2016 |
| Bakaas Cadconsult AS | Education | 2006 |
| Bakken Invest Holding AS | | 2021 |
| Bakt Innovation AS | Administrative & support | 2021 |
| BBF AS | Real estate | 2022 |
| Beijing House Bø AS | Hospitality | 2023 |
| Bente Og Sigurd Forberg Ans | Agriculture & fishing | 2003 |
| Berge Rådgivning AS | Professional & scientific | 2012 |
| Bergenåsen AS | Real estate | 2016 |
| Bergland Helsekost AS | Wholesale & retail | 2021 |
| Bergskås Maskin Og Bergsprengning AS | Construction | 2024 |
| Bergskås Og Rønningen Maskin AS | Construction | 2000 |
| Bertelsen Nyhuus AS | Wholesale & retail | 2017 |
| Beverøya Camping AS | Hospitality | 2001 |
| Bil I Bø AS | Wholesale & retail | 2023 |
| Bionér AS | Information & communication | 2018 |
| Birte Hindrum AS | Wholesale & retail | 2023 |
| Bit-Holding AS | | 2025 |
| Blomsterstemning AS | Wholesale & retail | 2006 |
| Borservice AS | Wholesale & retail | 2018 |
| BR Rådgivning AS | Professional & scientific | 2022 |
| Breibekk Eigedom AS | Real estate | 2014 |
| Breibekk Holding AS | Manufacturing | 2014 |
| Breisås 1 AS | Real estate | 1994 |
| Breisås 2 AS | Real estate | 2026 |
| Brenna 16 AS | Real estate | 2020 |
| Brenna Næringspark AS | Real estate | 2022 |
| Brillebutikken Holding AS | Real estate | 2022 |
| Brukås Eiendom AS | Real estate | 2023 |
| Brukås Holding AS | Wholesale & retail | 2023 |
| Bråten Eiendom AS | Real estate | 1999 |
| Brødrene Kallesten Rør AS | Construction | 2015 |
| BTL Utvikling AS | Real estate | 2020 |
| Buen Garnås AS | Professional & scientific | 2012 |
| Byggmester Ta Kjeldal AS | Professional & scientific | 2017 |
| Byting Da | Arts & recreation | 2014 |
| Brukås Sport A.S | Wholesale & retail | 1988 |
| Bø 2000 Consulting AS | Real estate | 1999 |
| Bø Asiamat AS | Wholesale & retail | 2016 |
| Bø Auto AS | Other services | 2012 |
| Bø Bakgård AS | Administrative & support | 2026 |
| Bø Beitelag Ba | Agriculture & fishing | 1970 |
| Bø Bil Og Eiendom AS | Real estate | 2005 |
| Bø Bil Og Karosseri AS | Other services | 2021 |
| Bø Bilco AS | Wholesale & retail | 1999 |
| Bø Blad AS | Information & communication | 1986 |
| Bø Bok Og Papir AS | Wholesale & retail | 2024 |
| Bø Brød AS | Manufacturing | 2018 |
| Bø Byggservice AS | Construction | 2002 |
| Bø Byggteam AS | Construction | 2005 |
| Bø Camping AS | Real estate | 1986 |
| Bø Containerservice AS | Real estate | 2001 |
| Bø Drift Og Vedlikehold AS | Administrative & support | 2026 |
| Bø Eiendom AS | Real estate | 1999 |
| Bø Fysioterapi AS | Real estate | 2007 |
| Bø Glass AS | Construction | 2014 |
| Bø Hotell AS | Hospitality | 1995 |
| Bø Hotell Eiendom AS | Hospitality | 2016 |
| Bø Installasjon AS | Construction | 2002 |
| Bø Kunnskapspark AS | Real estate | 2024 |
| Bø Lagerhotell AS | Hospitality | 2016 |
| Bø Maling AS | Construction | 1982 |
| Bø Montasje AS | Construction | 2024 |
| Bø Og Nes Elveigarlag SA | Real estate | 2025 |
| Bø Regnskap AS | Professional & scientific | 2020 |
| Bø Renhold AS | Administrative & support | 2009 |
| Bø Salg Og Service AS | Wholesale & retail | 2020 |
| Bø Senterbingo AS | Arts & recreation | 2012 |