| Billingstadsletta 97 AS | Oslo | 2012 |
| Billingstadsletta AS | Oslo | 2021 |
| Billingstadsletta Kombibygg AS | Oslo | 2021 |
| Billingstadsletta Næringsbygg AS | Oslo | 2016 |
| Billingstadveien 30 AS | Nesøya | 2019 |
| Billington Eiendom AS | Halden | 1923 |
| Billy Eiendom AS | Jessheim | 1998 |
| Bilmekanikern Fron Eiendom AS | Vinstra | 2015 |
| Bilrutene Østre Halsen Rekkevik Ans | Larvik | 1971 |
| Bilsenteret AS | Kaupanger | 1984 |
| Bilsenteret Bygg AS | Bjugn | 1986 |
| Bilsenteret Eiendom AS | Finnsnes | 2019 |
| Bilsenteret Eiendom Hestmarka AS | Namsos | 2006 |
| Bilsenteret Eiendom Invest AS | Finnsnes | 2022 |
| Bilsenteret Eiendom Navarveien AS | Spillum | 1998 |
| Bilsenteret Eiendom Spillum AS | Namsos | 2006 |
| Bilsenteret Invest AS | Spillum | 2005 |
| Bilsenteret Mo Auto AS | Norheimsund | 1996 |
| Bilsenteret SA | Kongsberg | 1975 |
| Bilservice Eigedom AS | Førde | 1991 |
| Bilskade Eiendom AS | Sørkjosen | 2023 |
| Bilskade Senja Eiendom AS | Finnsnes | 2026 |
| Bilskadesenteret Eiendom AS | Skogn | 1989 |
| Bilskadesenteret Eiendom Gjøvik AS | Hunndalen | 2021 |
| Bilskadesenteret Eigedom AS | Førde | 2011 |
| Bilskirne AS | Oslo | 2006 |
| Bilskirnir Invest AS | Fyllingsdalen | 2026 |
| Bilstad Bygg Eiendom AS | Moi | 2018 |
| Bilstad Eiendom AS | Bryne | 1997 |
| Bilstad Eiendomsutvikling AS | Moi | 2022 |
| Bilstad Holding AS | Bryne | 2007 |
| Biltech Eiendom AS | Bardufoss | 2020 |
| Bilteknikk Eiendom AS | Spillum | 2022 |
| Biltema Real Estate Norway AS | Jessheim | 1976 |
| Biltema Sortland AS | Jessheim | 2015 |
| Biltrend AS | Tromsdalen | 1998 |
| Biltrend Eiendom AS | Sortland | 1995 |
| Biltrend Eiendom Harstad AS | Harstad | 2003 |
| Biltrend Eiendom Tromsø AS | Tromsdalen | 2007 |
| Biltrend Stangnes AS | Harstad | 2022 |
| Bilutstyr Eiendom AS | Haugesund | 1997 |
| Bilveglaget Måsåmyrbekken (V3) SA | Kirkenær | 2020 |
| Bilveglaget Renåtangen SA | Gjerdrum | 2022 |
| Bim AS | Frogner | 2020 |
| Bim Holding AS | Oslo | 2020 |
| Bim Invest AS | Nordfjordeid | 2005 |
| Bima Eiendom AS | Ålesund | 1990 |
| Bimco AS | Halden | 2018 |
| Bimi AS | Bryne | 1992 |
| Bimo Invest 2 AS | Kristiansand S | 2026 |
| Bimo Invest AS | Kristiansand S | 2002 |
| Bimo Kapital AS | Oslo | 1939 |
| Binary Eiendom AS | Moss | 2025 |
| Bindal Utleie AS | Bindalseidet | 2023 |
| Binde Eiendom AS | Steinkjer | 2014 |
| Bindingsverket AS | Saltnes | 2023 |
| Bing Holding AS | Gjøvik | 1999 |
| Bingedammen AS | Moss | 2008 |
| Bingen AS | Oslo | 1984 |
| Bingeplassveien 2 | Sandefjord | 2018 |
| Bingsa AS | Oslo | 2015 |
| Bingsa Eiendom AS | Ålesund | 2021 |
| Bingsa Miljøpark AS | Ålesund | 2020 |
| Bingsa Miljøpark Holding AS | Ålesund | 2020 |
| Binkley Capital AS | Oslo | 2012 |
| Binn Eiendom AS | Mo I Rana | 2014 |
| Binnekroken 1 AS | Oslo | 2013 |
| Binova AS | Trondheim | 2025 |
| Binspired Solutions AS | Halden | 2020 |
| Binvest AS | Sandnes | 2005 |
| Bio Eiendom AS | Skien | 2006 |
| Bio Invest AS | Gjøvik | 2010 |
| Bio-Tech AS | Asker | 1984 |
| Biodden Eiendom AS | Kalandseidet | 2016 |
| Biofish Aquafarm AS | Godvik | 2018 |
| Biogradlija Eiendom AS | Ridabu | 2023 |
| Bioko Invest AS | Trondheim | 2017 |
| Biolin Eiendom AS | Gjøvik | 2024 |
| Biolink Industrial AS | Sandnes | 2017 |
| Biophilia AS | Voss | 1981 |
| Bioprotector AS | Jar | 2005 |
| Bir-Holding AS | Sparbu | 2017 |
| Biral AS | Sandvika | 1990 |
| Birch Eiendom AS | Eidsberg | 1999 |
| Birchill Holding AS | Innfjorden | 2022 |
| Birdflow AS | Fjellhamar | 2026 |
| Birdie Invest AS | Kristiansand S | 2007 |
| Birdiebreeze AS | Kristiansand S | 2017 |
| Birdieeyes AS | Jessheim | 2017 |
| Birdrock AS | Oslo | 2005 |
| Birdy Eiendom AS | Førresfjorden | 2025 |
| Birger Fjelde Holding AS | Jørpeland | 2015 |
| Birger Hatlebakks Veg 10 AS | Molde | 2006 |
| Birger Hatlebakks Veg 17 AS | Ålesund | 2004 |
| Birger Løken Eigedomselskap AS | Volda | 2002 |
| Birger N Haug Eiendom AS | Nesbru | 2020 |
| Birger Olsen Holding Aps | Dk-2660 Brøndby Strand | 2018 |
| Birgit Berg AS | Geilo | 2010 |
| Birgit Og Dan Holms Eiendommer AS | Kløfta | 1986 |
| Biri Eiendomsselskap AS | Biri | 2023 |