| Bortaførr AS | Oslo | 2025 |
| Bosgen AS | Drammen | 2022 |
| Bossekop Fysioterapi AS | Alta | 2017 |
| Bottenhaug Bemanning AS | Rennebu | 2021 |
| Bottolfs Osteopati Og Treningsfysiologi AS | Oslo | 2025 |
| Bounce AS | Drøbak | 2012 |
| Bovaro AS | Gran | 2024 |
| Bpa Drift AS | Halden | 2006 |
| Bpa Nord AS | Tromsø | 2007 |
| BR Dental AS | Florø | 2020 |
| Bra Barn AS | Ålesund | 2024 |
| Bra Barndom AS | Oslo | 2017 |
| Bra Helse AS | Skien | 2007 |
| Bra-Pro Lurøy Kommunale Vta AS | Aldersundet | 1990 |
| Bracket AS | Oppdal | 2016 |
| Bragd Invest AS | Fåberg | 2019 |
| Bragd Kompetanse AS | Gjøvik | 2014 |
| Bragernes Endospesialist AS | Drammen | 2011 |
| Bragernes Legesenter AS | Drammen | 2019 |
| Bragernes Øyeklinikk AS | Drammen | 2025 |
| Brageva AS | Trondheim | 2016 |
| Brain Camp AS | Kristiansand S | 2020 |
| Brandbu Helsebygg AS | Porsgrunn | 1997 |
| Brandsuite AS | Drammen | 2024 |
| Brass AS | Fana | 2018 |
| Brathetland Holding AS | Stavanger | 2023 |
| Bratlands Hjørne AS | Risør | 2020 |
| Bratlie Kiropraktikk AS | Tranby | 2023 |
| Brattlikollen Fysikalske Institutt AS | Oslo | 2024 |
| Brattlikollen Legesenter Drift AS | Oslo | 2014 |
| Brattvåg Fysikalske Institutt AS | Brattvåg | 1999 |
| Brattvåg Tannhelse AS | Brattvåg | 2020 |
| Brauer Holding AS | Kristiansand S | 2023 |
| Brauteknausen Medical AS | Ålesund | 2025 |
| Brauti Eiendom AS | Oslo | 2016 |
| Brauti Holding AS | Skien | 2014 |
| Brave World AS | Haugesund | 2022 |
| Bravita AS | Oslo | 2001 |
| Breakroom AS | Grimstad | 2021 |
| Bredal Fysio AS | Larvik | 2023 |
| Bredtann AS | Dilling | 2025 |
| Bredvold AS | Sandnessjøen | 2006 |
| Brekke Harung Holdning AS | Brattholmen | 2015 |
| Brekkegarden AS | Gjerdsvika | 2017 |
| Brelum AS | Tromsø | 2015 |
| Brenselsutsalget AS | Kirkenes | 1990 |
| Bresk AS | Jaren | 2009 |
| Bretun Fysioterapi AS | Trondheim | 2022 |
| Brevik Legesenter Da | Son | 2017 |
| Bricoleur AS | Oslo | 2021 |
| Brighenti AS | Oslo | 2018 |
| Brigs AS | Oslo | 2006 |
| Bringebærhagen Eiendom AS | Vollen | 2016 |
| Brinik Medical AS | Stord | 2023 |
| Brinil Holding AS | Rådal | 2020 |
| Brisk AS | Ålesund | 2020 |
| Brisk Karriere AS | Ålesund | 1968 |
| Brisk Utvikling AS | Ålesund | 2020 |
| Brit Hunstad AS | Sandefjord | 2015 |
| Brita Scheel Radiologi AS | Oslo | 2012 |
| Britanniatorget Legesenter Da | Drøbak | 2005 |
| Britry Holding AS | Larvik | 2025 |
| Britt Og Jans Kompass Ans | Hokksund | 1998 |
| Brixx AS | Oslo | 2023 |
| Bro Psykologtjenester AS | Eidsvåg I Åsane | 2025 |
| Brobekk Fysioterapi Da | Oslo | 2009 |
| Brobekk Legekontor Da | Oslo | 2014 |
| Brodtkorb-Bjørklund AS | Kvaløya | 2024 |
| Brodwall Berge Holding AS | Asker | 2024 |
| Brodwall Helsetjenester AS | Lillesand | 2017 |
| Brodwall Øre Nese Hals AS | Alta | 2024 |
| Brogaten Fysioterapi AS | Fredrikstad | 1979 |
| Bronchus AS | Drammen | 2018 |
| Bror Løvdal AS | Oslo | 2002 |
| Brorson&Sande AS | Oslo | 2019 |
| Brosundklinikken AS | Ålesund | 2024 |
| Brosundklinikken Holding AS | Ålesund | 2024 |
| Brotan Holding AS | Stavanger | 2017 |
| Brotorvet Tannklinikk AS | Stathelle | 2014 |
| Brow Rebelle AS | Sandnes | 2017 |
| Bru Holding AS | Stavanger | 2021 |
| Brua Spesialistsenter AS | Larkollen | 1993 |
| Brudvik Fysioterapi AS | Bergen | 2022 |
| Brugata Legesenter AS | Kongsvinger | 2021 |
| Brumunddal Fysikalske Institutt AS | Brumunddal | 2017 |
| Brumunddal Legesenter AS | Brumunddal | 2013 |
| Brustad Consulting AS | Sandefjord | 2019 |
| Bry Omsorg AS | Lørenskog | 2022 |
| Brygga Fysikalske Institutt Da | Kragerø | 2014 |
| Brygga Fysioterapi Psykomotorisk Senter Da | Tromsø | 2017 |
| Brygga Legekontor Fauske AS | Fauske | 2019 |
| Brygga Tannklinikk Dominik Ociepka AS | Rørvik | 2021 |
| Bryggeloftet Fysioterapi AS | Kristiansand S | 2017 |
| Bryggen Hudlegesenter AS | Bergen | 2020 |
| Bryggen Tannhelsesenter AS | Vestnes | 2004 |
| Bryggen Tannklinikk AS | Måløy | 2022 |
| Bryggen Tannlegesenter AS | Bergen | 2020 |
| Bryggeriet Fysioterapi Da | Elverum | 2026 |
| Bryggeriet Legesenter Da | Lillehammer | 2010 |
| Bryggeriet Tannlegesenter Da | Elverum | 2013 |