| Breelg AS | Jostedal | 2025 |
| Breilion AS | Hamresanden | 2011 |
| Breiliskogsveiforening Ba | Sira | 2000 |
| Breivikeidet Grunneierlag SA | Tromsø | 1981 |
| Brekke Industri Service AS | Odda | 2023 |
| Brekkemoen AS | Arendal | 2024 |
| Brekko Eiendom AS | Gol | 2005 |
| Bremanger Hagehjelp AS | Bremanger | 2013 |
| Bremnes Vekstheim AS | Oslo | 2024 |
| Brendebakken Verk AS | Drammen | 2004 |
| Brenderup AB | Nittedal | 2000 |
| Brenna Salg Og Utleie AS | Gol | 2013 |
| Brentebråten & Jung | Bergen | 2010 |
| Breogfjell AS | Sogndal | 2012 |
| Brevik Maskinutleie AS | Lierskogen | 2017 |
| BRF Fritid 3 | Se-840 60 Bräcke | 2008 |
| BRG Bilutleie Og Transport AS | Blomsterdalen | 2024 |
| Brick Technology AB Nuf | Se-116 38 Stockholm | 2026 |
| Bridon International Ltd | South Yorkshire Dn4 Bdg England | 1998 |
| Brigade AS | Gjøvik | 2023 |
| Brigantina AS | Oslo | 1993 |
| Brigg HR Partner Sia Nuf | Lv-1013 Riga | 2026 |
| Bright Facility AS | Vinterbro | 2024 |
| Bright Maritime Services | 900575 Constanta | 2007 |
| Bright Optical Solutions Norway Nuf | Se-114 46 Stockholm | 2018 |
| Bright People Rekruttering & Bemanning AS | Asker | 2012 |
| Bright Point International Financial (UK) Limited | Brighton East Sussex Bn2 9Qa | 2022 |
| Brighten AS | Trondheim | 2025 |
| Brilant AS | Oslo | 2025 |
| Brilliant Bemanning AS | Oslo | 2009 |
| Brilliant Investment AS | Stavanger | 2024 |
| Brilliant Renhold AS | Stavanger | 2019 |
| Brim Adventures AS | Tromsø | 2018 |
| Brimondo Brand Integrity 10 | Se-411 05 Göteborg | 2018 |
| Brimondo Brand Integrity 13 | Se-411 05 Gøteborg | 2018 |
| Brimondo Brand Integrity 14 | Se-411 05 Gøteborg | 2018 |
| Brimsholm Drift AS | Lepsøy | 2024 |
| Brimsholm Holding AS | Lepsøy | 2024 |
| Bring Equipment AS | Oslo | 2019 |
| Bris Drift AS | Alta | 2026 |
| Bris Facility AS | Langhus | 2025 |
| Briskeby Golf AS | Oslo | 2025 |
| Bristow Helicopters Australia Pty Ltd | Redcliffe Wa 6104 | 2012 |
| Bristow Helicopters Ltd | Surrey Rh1 5J2 England | 1996 |
| British Tourist Authority | Oslo | 1995 |
| Briv Invest AS | Askim | 2022 |
| Brix Technology AS | Hønefoss | 2000 |
| Brkt AS | Lier | 2022 |
| BRL Limited | Ab101Fx Aberdeen | 2010 |
| BRN Service AS | Tynset | 2025 |
| Broadside AS | Skartveit | 2010 |
| Broadstone Systems | Bergen | 2017 |
| Brobyggere Bemannings- Og Rekrutteringstjeneste AS | Bergen | 2023 |
| Brochman & Wiig Invest AS | Oslo | 2010 |
| Brocon Inkasso AS | Oslo | 2020 |
| Brogård Renhold AS | Moss | 2014 |
| Brokefjell AS | Kviteseid | 2026 |
| Brokke Aktivitet AS | Rysstad | 2005 |
| Bromle Eiendom AS | Os | 1991 |
| Brommwill AS | Stavanger | 1994 |
| Broneeconsulting AS | Tau | 2022 |
| Brook Consulting Services Ltd | North Lincolnshire Dn17 4Lb | 2020 |
| Brookson (5053E) Limited | Cheshire Wa1 1Rg | 2012 |
| Brookson 5242 Limited | Wa1 1Rg Warrington | 2012 |
| Brottsjø AS | Kristiansund N | 2008 |
| Browning & Henderson International Ltd | Blandford Forum, Dorset Dt11 8Jf | 1996 |
| Bru AS | Ålesund | 2026 |
| Brua-Bua AS | Vesterøy | 2018 |
| Brubakken Rental AS | Porsgrunn | 2020 |
| Bruel International | Oslo | 2002 |
| Bruket 39 AS | Gressvik | 2025 |
| Bruknapp Utleie AS | Hjellestad | 2025 |
| Bruksbo AS | Oslo | 1992 |
| Bruktbil Tjenester AS | Ålgård | 2000 |
| Bruktbilgruppen AS | Trondheim | 2010 |
| Brun Og Blid Solsenter AS | Straume | 1997 |
| Brunei Shell Petroleum Company | Bn-Kb2933 Negara Darussalam | 2023 |
| Brunel Energy Europe BV | 2629Jd Delft | 2006 |
| Brunel International France Nuf | Fr-78100 Saint-Germain-En-Laye | 2025 |
| Brunel International UK Ltd | Manchester M2 1Fb England | 2019 |
| Brunel South East Asia Pte Ltd - Norway Branch | Sg-068896 Singapore | 2020 |
| Brunlanes Service & Utleie AS | Helgeroa | 2026 |
| Brunlanes Underholdning AS | Nevlunghavn | 2020 |
| Bruns B.V. Nuf | 5571Cr Bergeilk | 2026 |
| Brunstad Ipr AS | Sykkylven | 2024 |
| Bruse Invest AS | Oslo | 1997 |
| Bruskeland AS | Oslo | 2020 |
| Brustad Busstrafikk AS | Levanger | 1983 |
| Brustad Invest AS | Levanger | 2005 |
| Bruvoll Services AS | Florvåg | 2015 |
| Bruøyne AS | Hemsedal | 2017 |
| Brygge AS | Oslo | 2026 |
| Bryggen Bilformidling AS | Oslo | 2020 |
| Bryllup I Lofoten AS | Kabelvåg | 2013 |
| Bryn Bilutleie AS | Oslo | 2007 |
| Bryn Bydrift AS | Kongsberg | 2012 |
| Bryn Finans AS | Oslo | 1990 |
| Bryn Service AS | Oslo | 2018 |
| Bryne Billakkering AS | Bryne | 2022 |
| Bryne Byggdrift AS | Bryne | 2014 |