| Changlai Global Ltd | Wholesale & retail | 2023 |
| Changle City Ltd | Hospitality | 2019 |
| Channel Builders Ltd | Information & communication | 2025 |
| Channel Creative Reliefs Limited | Professional & scientific | 2022 |
| Channel Horizon Ltd | Wholesale & retail | 2025 |
| Channel Wharf Capital Limited | Financial services | 2018 |
| Channel Wharf Investments Limited | Financial services | 2014 |
| Channel Wharf Management Company Limited | Real estate | 2007 |
| Chaofu Zhang Trading Ltd | Wholesale & retail | 2025 |
| Chaoragu Ltd | Wholesale & retail | 2024 |
| Chaos Beans Ltd | Information & communication | 2026 |
| Chapel View Management Company Limited | Real estate | 2008 |
| Chapterhouse Films Ltd | Information & communication | 2025 |
| Chapterhouse Recruitment Ltd | Administrative & support | 2017 |
| Charese Bingham Ltd | Health & social care | 2026 |
| Charging Leading Limited | Wholesale & retail | 2025 |
| Charioteer Limited | Wholesale & retail | 2000 |
| Charis Consultancy (NI) Ltd | Professional & scientific | 2013 |
| Charles Amert Ltd | Wholesale & retail | 2023 |
| Charles Bell (1963) Limited | Manufacturing | 1963 |
| Charles Brand Group Holdings Limited | Construction | 2011 |
| Charles Brand Group Limited | Construction | 2013 |
| Charles Brand M&E Limited | Construction | 1979 |
| Charles Brand Utilities Ltd | Financial services | 2022 |
| Charles Gilmore Ireland Limited | Wholesale & retail | 2016 |
| Charles Hawking Ltd | Wholesale & retail | 2016 |
| Charles Hurst Limited | Wholesale & retail | 1961 |
| Charles Hurst Motors Ltd | Extraterritorial | 1991 |
| Charles Hutchinson Consultancy Limited | Professional & scientific | 2025 |
| Charles Keys Ltd | Wholesale & retail | 2025 |
| Charles Mcauley Ltd | Wholesale & retail | 2025 |
| Charles Patrick Ltd | Professional & scientific | 2020 |
| Charles Tennant and Company (Northern Ireland) Limited | Wholesale & retail | 1945 |
| Charles White (Belfast) Ltd. | Real estate | 2011 |
| Charlestown Hall Management Company Limited | Real estate | 2021 |
| Charlestown Hall Management Company NO. 1 Limited | Households | 2021 |
| Charleville (JG) Limited | Financial services | 2015 |
| Charlie and Hugo Ltd | Hospitality | 2019 |
| Charlie Munga Limited | Financial services | 2022 |
| Charlies Pizza Belfast Limited | Hospitality | 2024 |
| Charlos Grill & Burgers Ltd | Hospitality | 2025 |
| Charlotte C Management Company Limited | Households | 2020 |
| Charm Talent International Trading Ltd | Wholesale & retail | 2026 |
| Charm Wedding Studio Ltd | Other services | 2018 |
| Charmwood Joinery Limited | Construction | 2016 |
| Charred Design Limited | Other services | 2025 |
| Chartered Accountants Support Limited | Other services | 1989 |
| Chartered Financial Consulting Ltd | Information & communication | 2025 |
| Charterhouse Estate Agents Limited | Extraterritorial | 2005 |
| Charterhouse Financial Negotiations Limited | Extraterritorial | 2005 |
| Charterhouse Property Management Limited | Real estate | 1996 |
| Charters Accident Repair Centre Ltd | Wholesale & retail | 2024 |
| Chartwell Investments Limited | Real estate | 1996 |
| Chase Gold Limited | Wholesale & retail | 2023 |
| Chasimz Limited | Health & social care | 2025 |
| Chasing Trails Ltd | Manufacturing | 2019 |
| Chateaux Developments Limited | Construction | 2005 |
| Chater Management Limited | Extraterritorial | 2014 |
| Chatitecture Ltd | Information & communication | 2025 |
| Chats Investments Limited | Real estate | 1998 |
| Chatsworth Square Management Company Limited | Real estate | 2005 |
| Chatvine Limited | Administrative & support | 2000 |
| Chauffeur ME Ltd | Transport & logistics | 2020 |
| CHC Construction and Formwork Ltd | Construction | 2019 |
| Cheapest OIL Limited | Information & communication | 2008 |
| Check Apir Ltd | Wholesale & retail | 2024 |
| Check OUT My Buns Ltd | Manufacturing | 2015 |
| Checkline Ltd | Professional & scientific | 2025 |
| Checkmark Properties Limited | Real estate | 2006 |
| Cheeky Monkeys Entertainment Ltd | Arts & recreation | 2016 |
| Chef Investments Limited | Administrative & support | 2006 |
| Chefar Limited | Wholesale & retail | 2024 |
| Chehobeeijf Limited | Wholesale & retail | 2023 |
| Chelsea Jade Limited | Manufacturing | 2024 |
| Chemcare (N.I.) Ltd | Wholesale & retail | 1996 |
| Chemical Treatment Services (Ireland) Limited | Water & waste | 1984 |
| Chendeng Ltd | Wholesale & retail | 2024 |
| Cheng Accessories Ltd | Wholesale & retail | 2023 |
| Chengle Cool Limited | Wholesale & retail | 2025 |
| Chengxiang Muyue Limited | Wholesale & retail | 2024 |
| Chenjiajun Trade Limited | Wholesale & retail | 2023 |
| Chenjiang Limited | Wholesale & retail | 2025 |
| Chenjunhua Limited | Manufacturing | 2024 |
| Chenjunkai Ltd | Wholesale & retail | 2025 |
| Chenlingqsdq Limited | Wholesale & retail | 2024 |
| Chenlsd Limited | Wholesale & retail | 2023 |
| Chenpp Ltd | Wholesale & retail | 2025 |
| Chenxiaowen Trade Ltd | Manufacturing | 2023 |
| Chenyhgtan Trade Limited | Wholesale & retail | 2024 |
| Cher-Comms Limited | Manufacturing | 2010 |
| Cherry Tree Holdings Limited | Real estate | 1993 |
| Cherry Tree Walk Management Company Limited | Households | 1989 |
| Cherryhill Distribution Limited | Manufacturing | 2015 |
| Cherryhill Hospitality Ltd | Financial services | 2025 |
| Cherryhill South Ltd | Real estate | 2020 |
| Cherryvalley Dental Care Ltd | Health & social care | 2012 |
| Cherryvalley Gardens Developments One Ltd | Construction | 2020 |
| Cherton Secure Limited | Administrative & support | 2018 |
| Cheslock Limited | Health & social care | 1987 |
| Chesnut Hill Ltd | Health & social care | 2012 |