| CTS Nordics AS | Information & communication | 2019 |
| CTS Nordics Holding AS | Information & communication | 2022 |
| CTS Paus Holding AS | | 2021 |
| CTS Security Solutions AS | Wholesale & retail | 2023 |
| CTV 11 Utvikling AS | Real estate | 1979 |
| CTV 9 AS | Real estate | 2015 |
| CTV Holding AS | | 2026 |
| Cu Holding AS | Wholesale & retail | 2007 |
| Cuartito AS | Wholesale & retail | 2014 |
| Cuatro AS | Financial services | 2004 |
| Cuatro Caminos AS | | 2025 |
| Cube IT AS | Information & communication | 2014 |
| Cube Storage AS | Real estate | 2025 |
| Cube Storage Holding AS | | 2025 |
| Cube Store Norge AS | Wholesale & retail | 2024 |
| Cubera Collection AS | Financial services | 2024 |
| Cubera Continuation Fund Limited | | 2022 |
| Cubera Impact 2022 Invest AS | Financial services | 2022 |
| Cubera Ix Holding AS | | 2021 |
| Cubera Opf Pe II AS | Financial services | 2018 |
| Cubera Pe II AS | Financial services | 2017 |
| Cubera Pe III Holding AS | | 2021 |
| Cubera Pe Viii AS | Financial services | 2016 |
| Cubera Private Equity 2020 Invest AS | Financial services | 2020 |
| Cubera Private Equity 2021 Invest AS | Financial services | 2021 |
| Cubera Private Equity 2024 Invest AS | Financial services | 2024 |
| Cubera Private Equity 2025 Invest AS | Financial services | 2025 |
| Cubera Private Equity AS | Financial services | 2006 |
| Cubera Secondary 2023 Invest AS | Financial services | 2022 |
| Cubera Secondary 2026 Invest AS | | 2026 |
| Cubera X Holding AS | | 2025 |
| Cubr AS | Professional & scientific | 2026 |
| Cucumber Invest AS | | 2025 |
| Cudia AS | Information & communication | 2026 |
| Cue Agency AS | Arts & recreation | 2013 |
| Cue Event AS | Administrative & support | 2024 |
| Cueboss AS | Information & communication | 2016 |
| Cuenta AS | | 2022 |
| Cuentas AS | Professional & scientific | 2017 |
| Cueshop AS | Wholesale & retail | 2024 |
| Cuidadosag Limited | Health & social care | 2021 |
| Cuisine Vitamin AS | Wholesale & retail | 2014 |
| Cujo Norway AS | Information & communication | 2025 |
| Cul Helse Og Konsulting AS | Health & social care | 2010 |
| Culinary Holding AS | Hospitality | 2014 |
| Cullimore AS | | 2026 |
| Cullinan AS | | 2024 |
| Cult Kaos AS | Arts & recreation | 2022 |
| Cult Management AS | Professional & scientific | 2024 |
| Cultivar AS | Professional & scientific | 2009 |
| Cultonx AS | Information & communication | 2021 |
| Cultrix International AS | Health & social care | 2019 |
| Cultura Sparebank | Financial services | 1996 |
| Cultural Design Holding AS | | 2020 |
| Culturas AS | Education | 2012 |
| Culture & Integration AS | Health & social care | 2016 |
| Culture Caddy AS | Education | 2024 |
| Culture Intelligence AS | Information & communication | 2014 |
| Cultureflow AS | Information & communication | 2025 |
| Cuma Event AS | Professional & scientific | 2014 |
| Cumming Group Norway AS | Professional & scientific | 2023 |
| Cummins Norway AS | Wholesale & retail | 2005 |
| Cumradio AS | Information & communication | 2026 |
| Cumulus Associates AS | Professional & scientific | 2011 |
| Cumulus Clouds AS | Information & communication | 2022 |
| Cumulus Energy Consultants AS | Professional & scientific | 2003 |
| Cumulus Invest AS | Financial services | 2003 |
| Cundall Norway AS | Professional & scientific | 2026 |
| Cuneiform AS | Information & communication | 2019 |
| Cupajo AS | Real estate | 2020 |
| Cupcake & Pie 2 AS | Manufacturing | 2019 |
| Cupcake & Pie Oslo AS | Manufacturing | 2023 |
| Cupola Holding AS | Real estate | 2016 |
| Cupp Computing AS | Information & communication | 2005 |
| Cura Balance Da | | 2026 |
| Cura Helse AS | Health & social care | 2023 |
| Curamando AS | Professional & scientific | 2017 |
| Curanor Care & Comfort Da | Health & social care | 1987 |
| Curare AS | Real estate | 2016 |
| Curare II AS | | 2018 |
| Curated AS | Wholesale & retail | 2025 |
| Curator Consulting AS | Professional & scientific | 2000 |
| Cure Christiania AS | Professional & scientific | 2025 |
| Curio Bemanning AS | Administrative & support | 2024 |
| Curiosity Games AS | Information & communication | 2025 |
| Curious Capital AS | Financial services | 2015 |
| Curious Minds AS | Wholesale & retail | 2007 |
| Curious Yellow Oslo AS | Professional & scientific | 2018 |
| Curiousgraph AS | Information & communication | 2016 |
| Curipod AS | Information & communication | 2019 |
| Curling Legs Publishing Da | Information & communication | 1992 |
| Curly Brackets Consulting AS | Information & communication | 2022 |
| Curly Brackets Holding AS | Information & communication | 2018 |
| Curo Advisory AS | Professional & scientific | 2026 |
| Currant AS | Professional & scientific | 2018 |
| Current Eco AS | Information & communication | 2013 |
| Current Eco Holding AS | | 2016 |
| Current Growth AS | | 2022 |
| Current Project AS | Professional & scientific | 2016 |
| Currents AS | Information & communication | 2026 |