| China Restaurant Zhu Ji-De Og Luo Guang-Rong Da | Elverum | 1990 |
| China Spring AS | Stokmarknes | 2017 |
| China Takeaway Da | Veavågen | 2015 |
| China Town AS | Stavanger | 2024 |
| China Twang AS | Skien | 2007 |
| China Wok AS | Levanger | 2012 |
| China Wok Take Away AS | Stavanger | 2011 |
| China-Bao-Restaurant AS | Mo I Rana | 2014 |
| China-Palace AS | Verdal | 2012 |
| Chindi AS | Bodø | 2010 |
| Chips Og Dip AS | Tromsø | 2019 |
| Chirma AS | Longyearbyen | 2022 |
| Choco Loco AS | Fredrikstad | 2023 |
| Choi & Lee AS | Tromsø | 2010 |
| Choi Matinvest AS | Sandefjord | 2016 |
| Choice Hotels & Resorts AS | Oslo | 2009 |
| Choice Skagerak AS | Oslo | 2000 |
| Chon Thai Restaurant AS | Bodø | 2007 |
| Chong Holding AS | Oslo | 2009 |
| Chonthong Thai Og Sushi AS | Rygge | 2022 |
| Chop Chop Easyfood AS | Trondheim | 2024 |
| Chop Sticks AS | Trondheim | 2024 |
| Chop Sticks Holding AS | Trondheim | 2024 |
| Chop Sticks Horizont AS | Trondheim | 2024 |
| Chop Sticks Restaurant AS | Trondheim | 2024 |
| Chop Sticks Sirkus AS | Trondheim | 2024 |
| Chop Sticks Solsiden AS | Trondheim | 2015 |
| Chopan Grill & Pizza AS | Vestby | 2022 |
| Chopstix Restaurant AS | Lørenskog | 2017 |
| Christensen Bakeriutsalg Og Cafeer AS | Gressvik | 2025 |
| Christian August AS | Oslo | 2017 |
| Christian Gaard Bygdetun AS | Trandal | 2010 |
| Christiania Restaurasjon AS | Oslo | 2006 |
| Christineborg Gjesthus AS | Runde | 2010 |
| Christineborg Turistsenter Og Runde Leirskole AS | Runde | 1977 |
| Christinegaard Hovedgaard AS | Bergen | 2008 |
| Chroma Mat AS | Mo I Rana | 2018 |
| Chuan Chim Thai Food AS | Skien | 2022 |
| Chuang Thai Takeaway AS | Sandnes | 2025 |
| Chunks AS | Ankenes | 2026 |
| CHÉ Jessheim AS | Jessheim | 2019 |
| Ciao Italia AS | Lonevåg | 2024 |
| Cibo AS | Haugesund | 2021 |
| Cibus Pizza Fyllingsdalen AS | Fyllingsdalen | 2016 |
| CIC Group AS | Oslo | 2021 |
| CIC Group Norway AS | Oslo | 2022 |
| CIC Holding AS | Oslo | 2021 |
| CIC Management AS | Oslo | 2020 |
| CIC Operations AS | Oslo | 2019 |
| CIC Operations Bodø AS | Oslo | 2025 |
| CIC Operations Flaa AS | Oslo | 2021 |
| CIC Operations Førde AS | Førde | 2023 |
| CIC Operations Hallingdal AS | Ål | 2018 |
| CIC Operations Haugesund Airport AS | Avaldsnes | 2020 |
| CIC Operations Haugesund AS | Haugesund | 2019 |
| CIC Operations Haugesund Park Pluss AS | Haugesund | 2023 |
| CIC Operations Jølster AS | Skei I Jølster | 2023 |
| CIC Operations Leto AS | Dal | 2020 |
| CIC Operations Osporten AS | Os | 2022 |
| CIC Operations Sandtorgholmen AS | Sandtorg | 2020 |
| CIC Operations Trondheim Airport AS | Stjørdal | 2020 |
| Cielito AS | Kjeller | 2017 |
| Cih AS | Oslo | 2024 |
| Cimperial AS | Gran | 2014 |
| CINDERELLA TAVERN DA Fast Food Restaurant & Kiosk | Nå | 1989 |
| Cinnamon Cafe & Bar AS | Finstadjordet | 2026 |
| Cinque Minuti AS | Ålesund | 2018 |
| Cinque Terre Italiensk Trattoria AS | Asker | 2022 |
| Cipresa AS | Tromsø | 2011 |
| Circum Bar AS | Verdal | 2019 |
| Cito AS | Oslo | 2023 |
| City Apartments AS | Lillestrøm | 2023 |
| City Bar AS | Oslo | 2019 |
| City Burger Fredrikstad AS | Fredrikstad | 2025 |
| City Camp Tromsø AS | Tromsø | 2015 |
| City Grill & Utleie AS | Askim | 2025 |
| City Grill AS | Skien | 2023 |
| City Hostel Bergen AS | Bergen | 2011 |
| City Hotel Fredrikstad AS | Fredrikstad | 2006 |
| City Housing AS | Stavanger | 1997 |
| City Living AS | Trondheim | 2005 |
| City Living Sentrum AS | Trondheim | 2018 |
| City Market AS | Hamar | 2015 |
| City Pizzeria AS | Bodø | 2023 |
| City Slice AS | Oslo | 2020 |
| City Sushi & Thai AS | Dal | 2016 |
| Citybox Bergen AS | Bergen | 2006 |
| Citybox Danmarksplass AS | Bergen | 2018 |
| Citybox Kristiansand AS | Kristiansand S | 2021 |
| Citybox Oslo AS | Oslo | 2011 |
| Citybox Tromsø AS | Bergen | 2020 |
| Cityhaven AS | Tiller | 1990 |
| Civest AS | Dyrvik | 2025 |
| Cja AS | Oslo | 2016 |
| Clarion Collection Hotel Kongsberg AS | Kongsberg | 2019 |
| Clarion Hotel Admiral AS | Bergen | 1996 |
| Clarion Hotel Energy AS | Stavanger | 2005 |
| Clarion Hotel Ernst AS | Kristiansand S | 1986 |
| Clarion Hotel Oslo Airport AS | Gardermoen | 1999 |
| Clarion Hotel Stavanger AS | Stavanger | 1999 |