| Bynesgutans Julestemning AS | Arts & recreation | 2001 |
| Bynesheimen AS | Real estate | 2007 |
| Bynesveien 48 AS | Real estate | 1999 |
| Byrise Holding AS | | 2023 |
| Byrå Tusj AS | Professional & scientific | 1995 |
| Byscenen Drift AS | Arts & recreation | 2007 |
| Byscenen Kongens GT 19 AS | Real estate | 2008 |
| Byscenen Servering AS | Hospitality | 2014 |
| Byti AS | | 2024 |
| Byåsen Bilskadesenter AS | Other services | 1997 |
| Byåsen Butikksenter AS | Real estate | 2023 |
| Byåsen Bygdealmenning V/ Gunnar Schei | Agriculture & fishing | 1995 |
| Byåsen Byggservice AS | Construction | 2014 |
| Byåsen Dyreklinikk AS | Real estate | 2015 |
| Byåsen Eiendomsservice AS | Real estate | 2009 |
| Byåsen Frisør AS | Other services | 2011 |
| Byåsen Holding AS | Construction | 2005 |
| Byåsen Legesenter AS | Health & social care | 1968 |
| Byåsen Murservice AS | Construction | 2013 |
| Byåsen Sushi AS | Hospitality | 2024 |
| Byåsen Tannhelse AS | Health & social care | 2024 |
| Byåsen Trafikkskole AS | Education | 2019 |
| Byåsen Vaktmesterservice AS | Administrative & support | 2015 |
| Byåsveien 158 Eiendom AS | Real estate | 2018 |
| Bachke & Co. A/S | Transport & logistics | 1977 |
| Bernhd. Brekke A/S | Real estate | 1940 |
| Båhus Gate 24 AS | Real estate | 2017 |
| Båhusgate 2 AS | Real estate | 2025 |
| Båhusgate 4B AS | Real estate | 2020 |
| Bård Ø. Holding AS | | 2018 |
| Båtlaget M/K Hermes SA | Arts & recreation | 2007 |
| Båtservice 1 AS | Transport & logistics | 2016 |
| Båwe AS | Financial services | 2006 |
| Bærekraftig Analyse AS | Professional & scientific | 2022 |
| Bøckmans Veg Eiendom AS | Real estate | 2023 |
| Bølgen Frisør AS | Other services | 2021 |
| Bølgene AS | Wholesale & retail | 2021 |
| Bønse Holding AS | | 2014 |
| Børge Godhavn AS | Financial services | 2005 |
| Børge Grønli Holding AS | | 2018 |
| Børge Stamnes AS | Wholesale & retail | 1991 |
| Børre Johnsen Holding AS | | 2016 |
| Børsa Bolig AS | | 2018 |
| Børset Og Haltli Byggservice AS | Construction | 2022 |
| Bøs AS | Real estate | 2005 |
| C L Schreiner AS | Financial services | 2018 |
| C M Helgesen AS | | 2025 |
| C. Eli AS | Real estate | 2021 |
| C. Moen Holding AS | Real estate | 2020 |
| C.G. Invest AS | | 2021 |
| C.G. Sjøbergs Eftf AS | Real estate | 1996 |
| C.H.A.V AS | Information & communication | 2018 |
| C.I. Pedersen A/S | Wholesale & retail | 1982 |
| C.Muller AS | Health & social care | 2023 |
| C3 KMV AS | Professional & scientific | 2017 |
| C3D Design AS | Professional & scientific | 2022 |
| Ca Va AS | Wholesale & retail | 2026 |
| Cabina AS | Other services | 1989 |
| Cabina Byhaven AS | Other services | 2017 |
| Cabina Thomas Angels GT AS | Other services | 2003 |
| Cabo Bilsenter AS | Wholesale & retail | 1962 |
| Cabral Holding AS | | 2023 |
| Cabusi AS | | 2020 |
| Cacatho AS | | 2021 |
| Cadatech AS | Professional & scientific | 2014 |
| Cadenza AS | Professional & scientific | 2004 |
| Cadinor AS | Professional & scientific | 2015 |
| Cadtec AS | Manufacturing | 1990 |
| Caerus AS | | 2022 |
| Caesar Holding AS | Real estate | 2005 |
| Cafe 3B AS | Hospitality | 1996 |
| Cafe 3B Holding AS | Hospitality | 2014 |
| Cafe Grafen AS | Hospitality | 2004 |
| Cafe La Belle AS | Hospitality | 2001 |
| Cafedotcom Support Da | Information & communication | 2001 |
| Cafè Nord AS | Real estate | 2017 |
| Café Le Frère AS | Hospitality | 2015 |
| Cajun Management AS | Professional & scientific | 2000 |
| Caldwell Bygg AS | Construction | 2020 |
| Callister Rådgivning AS | Professional & scientific | 2019 |
| Calqer AS | Professional & scientific | 2023 |
| Camen 435 Holding AS | | 2023 |
| Camilla AS | Financial services | 2017 |
| Camilla Cecilie Underland AS | | 2007 |
| Camperik AS | | 2025 |
| Campia AS | Wholesale & retail | 2005 |
| Campia Eiendom AS | Real estate | 2016 |
| Campia Lade AS | Wholesale & retail | 2014 |
| Campo Eiendom AS | Real estate | 2012 |
| Campo Holding AS | Real estate | 2005 |
| Campus Eiendom AS | Real estate | 2017 |
| Campus HG I AS | Real estate | 2022 |
| Campus Kristiansund AS | Real estate | 2021 |
| Campus SB II AS | Real estate | 2021 |
| Candy People Norway AS | Wholesale & retail | 2015 |
| Cantonica AS | Wholesale & retail | 2025 |
| Canutus AS | Information & communication | 2005 |
| Cap Consult AS | Professional & scientific | 2026 |
| Cap Holding AS | | 2020 |
| Capeesh AS | Information & communication | 2017 |