| Bystand AS | Nevlunghavn | 2022 |
| Bystranda Eventhus Tønsberg AS | Tønsberg | 2024 |
| Bysykkelen AS | Stavanger | 2014 |
| Byte Gaming AS | Stjørdal | 2023 |
| Bytteboks AS | Hurdal | 2022 |
| Byåsen Vaktmesterservice AS | Trondheim | 2015 |
| Bergens Rengjøringsselskap AS | Laksevåg | 1971 |
| Bugge & Amundsen AS | Drammen | 1941 |
| Bålkos AS | Farstad | 2014 |
| Båsmo Holding AS | Mo I Rana | 2016 |
| Båstø Maskinpark AS | Hemsedal | 2022 |
| Båtservice Sightseeing AS | Oslo | 2007 |
| Båtspa AS | Rygge | 2023 |
| Båtsvik AS | Gurskøy | 2011 |
| Båtutleie Sør AS | Lindesnes | 2005 |
| Bækø Invest AS | Molde | 2024 |
| Bærekraftig Produktutvikling AS | Rælingen | 2023 |
| Bærheim Service AS | Kleppe | 2026 |
| Bærum Bilutleie AS | Haslum | 1980 |
| Bærum Eiendomsdrift AS | Bærums Verk | 2023 |
| Bærum Ferdigplen Gressenteret AS | Lommedalen | 2012 |
| Bærum Golfsenter AS | Rud | 2013 |
| Bærum Hageservice AS | Hønefoss | 2014 |
| Bærum HR & Rekruttering AS | Billingstad | 2024 |
| Bærum Kunsthall AS | Fornebu | 2016 |
| Bærum Maskin Og Stillasutleie AS | Vøyenenga | 2013 |
| Bærum Snørydding AS | Lommedalen | 2011 |
| Bæråsenveien SA | Tvedestrand | 2014 |
| Bæverdalen Maskinlag AS | Bæverfjord | 2022 |
| Bævre Maskinutleie AS | Surnadal | 2025 |
| Bø Bakgård AS | Bø I Telemark | 2026 |
| Bø Drift Og Vedlikehold AS | Bø I Telemark | 2026 |
| Bø Kontor Og Datatjenester Ans | Straumsjøen | 2001 |
| Bø Lift Og Maskinutleie AS | Gvarv | 2016 |
| Bø Liftutleie AS | Bø I Vesterålen | 2016 |
| Bø Maskinservice Da | Engeløya | 2009 |
| Bø Renhold AS | Bø I Telemark | 2009 |
| Bø Storkiosk Og Video AS | Lunde | 1993 |
| Bø Tannlegesenter AS | Bø I Telemark | 2012 |
| Bøanedsetra Hyttegrend Drift AS | Stryn | 2010 |
| Bøck Holding AS | Oslo | 2020 |
| Bøe Maskinutleie AS | Bølandet | 2025 |
| Bøe Service AS | Os | 2014 |
| Bøen Holding AS | Øksendal | 2016 |
| Bøhmen Thema Consult Ans | Oslo | 1990 |
| Bøhn Container AS | Sandnes | 2001 |
| Bøhn Eiendom AS | Sandnes | 2005 |
| Bøhn Snøservice AS | Tyristrand | 2026 |
| Bøifot Elektro Ansatte AS | Kristiansund N | 2011 |
| Bøk Invest AS | Nordkisa | 2020 |
| Bøler Renhold Da | Oslo | 2012 |
| Bølgan Blå AS | Torvastad | 2022 |
| Bøljer I Byen AS | Sandefjord | 2022 |
| Bømlo Drift Og Eiendomsservice Da | Bremnes | 2026 |
| Bømlo Golfsenter AS | Bremnes | 2021 |
| Børgin Eiendom AS | Inderøy | 2006 |
| Børildsvågen AS | Hauge I Dalane | 2017 |
| Børre Berglund Reiselivsrådgivning AS | Son | 2012 |
| Børre Bjørsvik AS | Molde | 2014 |
| Børsa Kystberedskap AS | Børsa | 2026 |
| Børve Maskin Og Eiendom AS | Etne | 2026 |
| Børve Produksjon AS | Hovland | 2007 |
| Bøstrand Utleige AS | Ørsta | 2021 |
| Bøtteballetten AS | Oslo | 2023 |
| Bøtter Og Spann AS | Bodø | 2014 |
| C Hallströms Verkstäder AB | Se-835 40 Nälden | 2023 |
| C Link Holding AS | Kristiansand S | 2021 |
| C Manpower | Dk-9230 Svenstrup J | 2021 |
| C Og C AS | Gol | 2018 |
| C R Drift AS | Skien | 2025 |
| C&N Motors Limited | Gb-Aberdeenshire Ab42 1Jb | 2017 |
| C&T Landskap AS | Vestby | 2025 |
| C-Grønt AS | Jessheim | 2021 |
| C-Mar Services (UK) Ltd | Aberdeen Ab11 5Ae | 1997 |
| C-Rent.No AS | Andenes | 2019 |
| C.C. Jensen | Dk-5700 Svendborg | 2021 |
| C.D. Control and Instrumentation Ltd | M191Rp Manchester | 2020 |
| C.Grøntvedt Management AS | Kristiansund N | 2023 |
| C.H. Rugg & Co Nuf | Oslo | 2026 |
| C.P. Consult AS | Årnes | 2011 |
| C.Tenjum AS | Hosteland | 2022 |
| C.Thomsen Holding AS | Sandnes | 2024 |
| C2 Elements Aps | Dk-5250 Odense Sv | 2022 |
| C3 Maskinutleie AS | Kolsås | 2022 |
| Ca Po AS | Mandal | 2005 |
| Cab Group Norway AS | Oslo | 2012 |
| Cabbie AS | Finstadjordet | 2021 |
| Cabesa Holding AS | Oslo | 2005 |
| Cabin Campers AS | Oslo | 2018 |
| Cabin Care Norway AS | Drøbak | 2019 |
| Cabinet Interactive, LLC | Los Angeles California 90028 | 2018 |
| Caddie Golf Scandinavia | Oslo | 2024 |
| Cae Aviation Academy Norway Holdings AS | Gardermoen | 2007 |
| Caera AS | Stavanger | 2014 |
| Cai Kjøkken AS | Oslo | 2020 |
| Caiano Ship AS | Haugesund | 1997 |
| Caiano Shipping AS | Haugesund | 2011 |
| Cala Luna Holding AS | Egersund | 2019 |
| Calderys Norway AS | Porsgrunn | 2022 |
| Caledonia Hydrographic Limited | 1Qu Auchencairn | 2009 |