| Bali Bites AS | Hospitality | 2017 |
| Balle Invest AS | Real estate | 2005 |
| Balm Invest AS | | 2023 |
| Baltic Line AS | Transport & logistics | 2001 |
| Bam & Co AS | Financial services | 2016 |
| Bamboo Consulting Ans | Administrative & support | 2002 |
| Bambusa AS | Wholesale & retail | 2013 |
| Bambusa Retail AS | Wholesale & retail | 2026 |
| Bamsebu Barnehage SA | Education | 1993 |
| Bamsic AS | Professional & scientific | 2017 |
| Bananas Invest AS | | 2022 |
| Bananer II AS | | 2024 |
| Banegata Eiendom AS | Real estate | 2004 |
| Banevigsgata 5 AS | Real estate | 2023 |
| Bankers Forus AS | Hospitality | 2019 |
| Bankers Holding AS | Hospitality | 2019 |
| Bankplassen Eiendom AS | Real estate | 2007 |
| Barber SJ AS | | 2024 |
| Barberell AS | Other services | 2004 |
| Barde Software AS | Information & communication | 2005 |
| Bare Ark AS | Professional & scientific | 2024 |
| Bare Clinic AS | Other services | 2005 |
| Bare Clinic Drift AS | Other services | 2011 |
| Bare Lenschow Arkitektur AS | Professional & scientific | 2023 |
| Barflow AS | Wholesale & retail | 2023 |
| Barfot Keramikk AS | Manufacturing | 2013 |
| Bark Arkitekter AS | Professional & scientific | 2005 |
| Barka Invest AS | Professional & scientific | 1988 |
| Barokk Frisør AS | Other services | 2005 |
| Barokk Stavanger AS | Other services | 2008 |
| Barroco Technologies AS | | 2021 |
| Bartenderutleie AS | Other services | 2019 |
| Base 12 AS | Information & communication | 2022 |
| Base Bolig AS | Real estate | 2017 |
| Base Gruppen AS | Professional & scientific | 2024 |
| Base Home AS | | 2023 |
| Base Property AS | Real estate | 2011 |
| Base-X AS | Wholesale & retail | 2024 |
| Baseline Energy AS | Professional & scientific | 2021 |
| Bassi Holding AS | | 2023 |
| Basso Stavanger AS | Hospitality | 2022 |
| Bastard AS | | 2013 |
| Basthabn AS | Real estate | 2022 |
| Basthabn Holding AS | Real estate | 2022 |
| Batco AS | Real estate | 2006 |
| Bate AS | Real estate | 1969 |
| Bate Eiendomsutvikling AS | Real estate | 1998 |
| Bateman Holding AS | | 2025 |
| Batholite Holding AS | | 2023 |
| Battmann AS | Professional & scientific | 2021 |
| Baustad & Co AS | Professional & scientific | 2007 |
| Baustad Invest AS | | 2022 |
| Bavo AS | Professional & scientific | 2025 |
| Baxx Storbilvask AS | Other services | 2019 |
| Bay Capital AS | Real estate | 2018 |
| Bay Capital Eiendom AS | Real estate | 2005 |
| Bay Capital Invest AS | Real estate | 2015 |
| Bay USA AS | Information & communication | 2022 |
| Bayview Property Invest AS | | 2017 |
| Bazaar Boutique AS | Wholesale & retail | 2015 |
| Bazinga AS | Professional & scientific | 2018 |
| BB Holding AS | Real estate | 1998 |
| BB2S11 AS | Real estate | 2024 |
| Bbeauté AS | Other services | 2024 |
| BBH Eiendom AS | Real estate | 2025 |
| Bbhk Holding AS | Real estate | 2025 |
| Bbinx Eiendom AS | Real estate | 2007 |
| BBK Eiendom AS | Real estate | 2025 |
| BC Eiendomsselskap AS | Real estate | 2000 |
| BCC Stavanger Holding AS | Real estate | 2022 |
| BCP Sola AS | Real estate | 2019 |
| BD Trading AS | Real estate | 1979 |
| Be Beautiful Forever Medispa Hud- Og Fotklinikk AS | Health & social care | 2024 |
| Be-No Invest AS | Financial services | 1998 |
| Bea Jewellery AS | Manufacturing | 2021 |
| Bears Whale Invest AS | | 2023 |
| Beast Invest AS | | 2025 |
| Beate Bie Holding AS | | 2021 |
| Beauty House AS | Other services | 2017 |
| Beautylab AS | Other services | 2023 |
| Bebeautiful AS | Wholesale & retail | 2024 |
| Bech Offshore AS | Professional & scientific | 2016 |
| Bedre Beslutninger AS | Education | 2014 |
| Bedre Burger 2 AS | Hospitality | 2018 |
| Bedre Burger 7 AS | Hospitality | 2024 |
| Bedre Burger 8 AS | Hospitality | 2024 |
| Bedre Hverdag AS | Wholesale & retail | 2018 |
| Bedriftsutvikling AS | Real estate | 1987 |
| Bedriftsveien 25 Klepp AS | Real estate | 2006 |
| Begeistring AS | Real estate | 2016 |
| Behold AS | Real estate | 2013 |
| Beineveien AS | Real estate | 2005 |
| Being Mindful AS | Education | 2017 |
| Bekam Engineering AS | Professional & scientific | 2019 |
| Bekevi AS | Financial services | 2014 |
| Bekkefaret Holding AS | Real estate | 2006 |
| Bekkefaret Legesenter AS | Health & social care | 2019 |
| Bekkevold AS | Professional & scientific | 2015 |
| Belf AS | Health & social care | 2025 |
| Belimart AS | Wholesale & retail | 2026 |