| CN Equity Da | Wholesale & retail | 2022 |
| Cnma AS | Professional & scientific | 2025 |
| Coach Bjørndal AS | Education | 2024 |
| Coast Consult AS | Manufacturing | 2008 |
| Coast Corporate Consulting AS | Professional & scientific | 2023 |
| Coastline Invest Holding AS | Financial services | 2015 |
| Coco&Co AS | | 2020 |
| Cocoo Da | Wholesale & retail | 2005 |
| Cocreate Careers AS | Administrative & support | 2020 |
| Codan Marine Nuf | Financial services | 2024 |
| Code Engineering AS | Construction | 2012 |
| Codelab Bergen AS | Information & communication | 2013 |
| Coen AS | | 2022 |
| Col De Vence AS | | 2023 |
| Col De Vence II AS | | 2024 |
| Colibra AS | Real estate | 2006 |
| Colift AS | Information & communication | 2023 |
| Collaborare AS | Water & waste | 2007 |
| Collina AS | | 2023 |
| Colonialen 44 AS | Hospitality | 2012 |
| Colonialen AS | Hospitality | 2005 |
| Colonialen Fetevare AS | Wholesale & retail | 2014 |
| Colonialen Jest AS | Hospitality | 2024 |
| Colonialen Litteraturhuset AS | Hospitality | 2012 |
| Colonialen Sundt AS | Hospitality | 2024 |
| Color Vision AS | Wholesale & retail | 2015 |
| Colorado Eiendom AS | Real estate | 2015 |
| Comatra AS | Wholesale & retail | 2014 |
| Comfort Hotel Holberg AS | Hospitality | 1991 |
| Comigjen AS | Information & communication | 2006 |
| Comm Broker Bergen AS | Wholesale & retail | 1999 |
| Comm Broker Holding AS | Wholesale & retail | 1999 |
| Committed AS | Professional & scientific | 2019 |
| Companys Galleriet AS | Wholesale & retail | 2008 |
| Completesmiles - Minde Tannklinikk AS | Health & social care | 2024 |
| Completesmiles AS | Wholesale & retail | 2021 |
| Complér Accounting AS | Professional & scientific | 2008 |
| Complér Corporate AS | Professional & scientific | 2008 |
| Complér Invest AS | | 2023 |
| Compute Advisor AS | Professional & scientific | 2020 |
| Compute AS | Information & communication | 2014 |
| Compute Employee AS | | 2025 |
| Compute Holding AS | Real estate | 2015 |
| Compute Insight AS | Information & communication | 2021 |
| Conbus Norway Holding AS | Professional & scientific | 2020 |
| Conclave & Earshot Da | Arts & recreation | 2009 |
| Condensia AS | Professional & scientific | 2026 |
| Conger AS | Financial services | 2005 |
| Conondrum AS | Real estate | 2020 |
| Conor Lewis Holdings AS | | 2023 |
| Conrad Mohrs Veg 15 AS | Real estate | 2013 |
| Conrad Mohrs Veg 29 AS | Real estate | 2014 |
| Conrad Mohrs Veg 4B AS | Real estate | 2017 |
| Conrad Mohrsvei 23-25 AS | Real estate | 1989 |
| Conrad Mohrsvei 40 AS | Real estate | 2019 |
| Conscious Consulting AS | Professional & scientific | 2023 |
| Consil AS | Professional & scientific | 2017 |
| Consto Anlegg Vest AS | Construction | 2020 |
| Consto Bergen AS | Construction | 2005 |
| Construction Services AS | Mining & quarrying | 1985 |
| Consult Partner AS | Professional & scientific | 2013 |
| Consultatio Medicinae Primariae AS | Health & social care | 2024 |
| Conta Bygg AS | Construction | 2018 |
| Contango Corporate AS | Professional & scientific | 2019 |
| Content Publishing AS | Information & communication | 2016 |
| Contiki Ressurser AS | Professional & scientific | 2005 |
| Contingency AS | Financial services | 2005 |
| Contorted Da | Arts & recreation | 2026 |
| Conval AS | Professional & scientific | 2026 |
| Convekstor AS | Financial services | 2004 |
| Convenience Stølen AS | Wholesale & retail | 2004 |
| Cood AS | Wholesale & retail | 2021 |
| Copa Media AS | Information & communication | 2017 |
| Coratti Og Tesdal AS | Administrative & support | 2020 |
| Core Development AS | Professional & scientific | 2017 |
| Core Hotel Bergen AS | Hospitality | 2018 |
| Core Integrity AS | Manufacturing | 2022 |
| Corinne Eiendom AS | Real estate | 2015 |
| Corleone AS | Financial services | 2005 |
| Corleone II AS | Financial services | 2005 |
| Cornerbaren AS | Hospitality | 2016 |
| Cornerstone Investments AS | | 2020 |
| Cornerstone Scenekunst AS | Arts & recreation | 2023 |
| Corp NN AS | Professional & scientific | 2019 |
| Corpen Eiendom AS | Real estate | 2023 |
| Corpen Invest AS | Real estate | 2022 |
| Cort Adelers Gate 33 AS | Real estate | 2009 |
| Cort Piil Eiendom AS | Real estate | 2007 |
| Cort Piil Helsesenter AS | Health & social care | 2007 |
| Cort Piil-Smauet 4 AS | Real estate | 1946 |
| Cortes AS | Real estate | 2006 |
| Cortina Capital Invest AS | | 2024 |
| Cosmere Holding AS | | 2021 |
| Cosmo Kitchen & Lounge AS | Hospitality | 2020 |
| Cotec Medieteknikk AS | Professional & scientific | 2015 |
| Cou Holding AS | | 2021 |
| Counting Hero AS | Information & communication | 2019 |
| Covfefe AS | Professional & scientific | 2017 |
| Cozy Holding AS | Hospitality | 2025 |
| Cozycation AS | Hospitality | 2025 |