| Bellingan Holding AS | Tynset | 2024 |
| Bellino AS | Paradis | 1986 |
| Belsvik Elektro AS | Kyrksæterøra | 2013 |
| Belsås Drift AS | Surnadal | 2025 |
| Beluja Ans | Høvik | 2003 |
| Belvent.No AS | Stord | 2016 |
| Bema Service Larsen Holst Ans | Sørstraumen | 1992 |
| Beme Bygg AS | Os | 2020 |
| Bemio AS | Vestfossen | 2019 |
| Bena Bygg AS | Drøbak | 2022 |
| Benbau AS | Oslo | 2026 |
| Bend Og Bøy AS | Vadsø | 1988 |
| Bendiksen Entreprenør AS | Brønnøysund | 2012 |
| Bendiksen's AS | Moi | 2025 |
| Bendiktsen Maskin Og Transport AS | Harstad | 2012 |
| Bene Est Co Oü | Ee-Hariduse Tn 4-45, 41534 | 2021 |
| Bengt Erik Joakim Nilsson | Oppaker | 2004 |
| Bengt Hansson Bygg | Se-783 50 Gustafs | 2019 |
| Bengt Linder | Se-685 34 Torsby | 2012 |
| Bengtsfors Glasmästeri AB | Se-666 30 Bengtsfors | 2012 |
| Bengtsfors Maskin Och Industrimontage AB | Se-666 31 Bengtsfors | 2008 |
| Benjaminsen Graveservice AS | Ågotnes | 2017 |
| Benki AS | Lørenskog | 2014 |
| Benki Eiendom AS | Lørenskog | 2015 |
| Benninghoven Zweigniederlassung Der Wirtgen Mineral Technologies GmbH | Oslo | 2021 |
| Benny Bygg AS | Oslo | 2022 |
| Benny Orstad AS | Klepp Stasjon | 2007 |
| Benoni Bygg AS | Bodø | 2021 |
| Benrox AS | Kongsberg | 2018 |
| Bens Rørleggerservice AS | Fjellhamar | 2012 |
| Bensitt AS | Godvik | 2024 |
| Bent Aasli AS | Enebakk | 2012 |
| Bent Vikøren AS | Kaupanger | 2016 |
| Bents Parkettsliperi AS | Voll | 2022 |
| Bents Parkettsliping Gulvservice Da | Lillesand | 1995 |
| Bentsen Bygg AS | Gravdal | 2021 |
| Bentsen Maskin AS | Hønefoss | 2023 |
| Bentsrudveien 5 AS | Holmestrand | 2017 |
| Bentzen Elektro AS | Horten | 2001 |
| Benu AS | Rasta | 2018 |
| Benum Ltd Norge | Velfjord | 2007 |
| Benuta AS | Lørenskog | 2026 |
| Beos Invest AS | Myre | 2011 |
| Bep Bygg AS | Kvaløya | 2015 |
| Bera Bygg AS | Brumunddal | 2024 |
| Berdal Røyr Og Sanitær AS | Vik I Sogn | 2012 |
| Berdalslivegen Skogsforening | Fresvik | 1996 |
| Bereko AS | Godvik | 2025 |
| Berentsen Bygg AS | Nesttun | 2018 |
| Berg & Bryn AS | Trysil | 2020 |
| Berg & Bryn Holding AS | Trysil | 2020 |
| Berg & Fagerli Ans | Harstad | 1997 |
| Berg & Olsen AS | Verdal | 2004 |
| Berg & Wien Massivtre AS | Dokka | 2009 |
| Berg & Wigum AS | Trondheim | 2022 |
| Berg Bygg & Anlegg AS | Eggedal | 2020 |
| Berg Bygg AS | Hosle | 1998 |
| Berg Byggservice AS | Fjellhamar | 2012 |
| Berg Byggtjenester AS | Levanger | 2008 |
| Berg Eiendom Entreprenør AS | Haugesund | 2022 |
| Berg Elektro AS | Bøstad | 2006 |
| Berg Entreprenør AS | Evje | 2024 |
| Berg Fjellsprenging AS | Andebu | 2004 |
| Berg Graving & Transport AS | Moen | 2022 |
| Berg Hansen AS | Tolvsrød | 2022 |
| Berg Maskin & Transport AS | Tansøy | 2017 |
| Berg Maskin AS | Sparbu | 2012 |
| Berg Mur & Flis AS | Skien | 2015 |
| Berg Och Grundsäkring L Svensson AB | 456 91 Kungshavn | 2005 |
| Berg Og Anleggsteknikk AS | Storslett | 2024 |
| Berg Og Sandboe AS | Koppang | 1987 |
| Berg Og Sandboe Elektro AS | Oslo | 1987 |
| Berg Og Sandboe Holding AS | Koppang | 2018 |
| Berg Stillas AS | Sandnes | 2024 |
| Berg Takservice AS | Trondheim | 2025 |
| Berg Ventilasjon AS | Ågotnes | 2020 |
| Berg VVS AS | Alta | 2021 |
| Bergaas VVS AS | Drammen | 2016 |
| Bergan Bygg AS | Lonevåg | 1998 |
| Bergan Drift AS | Steinsholt | 2022 |
| Bergan Maskin AS | Vegårshei | 2002 |
| Berganåsen Eiendom AS | Nøtterøy | 2017 |
| Bergaust Bad AS | Brumunddal | 2024 |
| Bergaust Byggtjenester AS | Brumunddal | 2017 |
| Berge Anlegg AS | Stranda | 2011 |
| Berge Anlegg Og Utleie AS | Morgedal | 2022 |
| Berge AS | Strømmen | 2020 |
| Berge Bygdeservice AS | Aurskog | 2022 |
| Berge Bygg Og Sanering AS | Skoppum | 2022 |
| Berge Bygginnredning Nuf | Rådal | 2005 |
| Berge Byggservice AS | Ølen | 2024 |
| Berge Drift AS | Fannrem | 2023 |
| Berge Elektro AS | Bygstad | 2023 |
| Berge Elektronikk AS | Eikelandsosen | 2012 |
| Berge Håndverk AS | Strømmen | 2018 |
| Berge Kulde & Energi AS | Ålesund | 2010 |
| Berge Maskin Og Entreprenør AS | Ølensvåg | 2006 |
| Berge Multiservice AS | Åmot | 2022 |
| Berge Sag Fagbygg AS | Ølensvåg | 1998 |
| Berge Sag Gruppen AS | Ølensvåg | 2017 |