| CFF Ltd | Real estate | 2023 |
| CG Foods Scotland Ltd | Hospitality | 2026 |
| CG Hairdressing Limited | Other services | 2019 |
| CGL Rentals Ltd | Real estate | 2021 |
| CGR Group Ltd | Water & waste | 2022 |
| CGW (Scot) Ltd | Construction | 2020 |
| CH1LL Studio Nail & Spa Ltd | Other services | 2026 |
| Ch@Finch Limited | Real estate | 2017 |
| Chacepr Ltd | Professional & scientific | 2017 |
| Chai & Thistle Ltd | Wholesale & retail | 2025 |
| Chainline Workshop Limited | Manufacturing | 2026 |
| Chains Direct Scotland Limited | Manufacturing | 2012 |
| Chairs Hairdressing Limited | Administrative & support | 2009 |
| Change Advocate Limited | Administrative & support | 2025 |
| Changxinglong Ltd | Hospitality | 2025 |
| Charles F Street & Sons Ltd | Transport & logistics | 2018 |
| Charles Stuart Investments Limited | Other services | 2021 |
| Chase Inn Limited | Hospitality | 2013 |
| CHB Logistics Ltd | Transport & logistics | 2024 |
| Checker Leather Limited | Wholesale & retail | 1979 |
| Cheeky Entertainment Ltd. | Arts & recreation | 2011 |
| Cheesecake Cottage Ltd | Hospitality | 2022 |
| Cherry Nutrition Limited | Health & social care | 2025 |
| Cherry Telecom Limited | Information & communication | 2024 |
| Chilos Kilmarnock Ltd | Hospitality | 2026 |
| Chilos Warehouse Ltd | Transport & logistics | 2025 |
| Chilton Flooring Ltd | Construction | 2018 |
| Chilton Residential Ltd | Real estate | 2026 |
| Chismanchisholm Rail Ltd. | Construction | 2014 |
| Chml Limited | Real estate | 2023 |
| Choughed Ltd | Real estate | 2025 |
| Chris Kennedy Energy Ltd | Other services | 2019 |
| Circo Consulting Ltd | Financial services | 2020 |
| Circumspect Security Services Ltd | Administrative & support | 2025 |
| Cita Tapas Ltd | Hospitality | 2019 |
| Citadel Signs Limited | Administrative & support | 2017 |
| CJ Barr Engineering Limited | Professional & scientific | 2012 |
| CJB Kilmarnock Ltd | Wholesale & retail | 2022 |
| Cjduncan Ltd | Real estate | 2025 |
| CJL (Scotland) Limited | Wholesale & retail | 2014 |
| CK Energy Generation Ltd | Other services | 2025 |
| CK Turbines Ltd | Other services | 2025 |
| CKD Solutions Ltd | Construction | 2025 |
| Cksd Holdings Ltd | Real estate | 2025 |
| Clach Supplies Ltd | Mining & quarrying | 2025 |
| Claire Dorby Psychology Limited | Education | 2025 |
| Claire Friedrich Antiques and Collectibles Ltd | Wholesale & retail | 2022 |
| Claire Stevenson Holdings Limited | Professional & scientific | 2024 |
| Claire’S Kooky Cakes Ltd | Manufacturing | 2022 |
| Clan Fashion UK Ltd | Wholesale & retail | 2021 |
| Clan Healthcare UK Ltd | Health & social care | 2021 |
| Clanaven Limited | Information & communication | 2019 |
| Claymore Civil Engineering Ltd | Construction | 2025 |
| Claymore Security Ayrshire Ltd | Administrative & support | 2016 |
| Claymore Security Ltd | Financial services | 2025 |
| Claymore Security Services Ltd | Financial services | 2021 |
| Cldolan Limited | Administrative & support | 2025 |
| Cleaning and Compliance Facilities Management (Ccfm) Limited | Administrative & support | 2014 |
| Cleaning Ladies Agency Ltd | Administrative & support | 2023 |
| Cleaning Ladies Commercial Ltd | Health & social care | 2021 |
| Clear Grade Electronics Ltd | Wholesale & retail | 2026 |
| Clear Vision Mortgages Ltd | Financial services | 2018 |
| Clearsight Strategies Ltd | Professional & scientific | 2023 |
| Clements Contracts Ltd | Construction | 2025 |
| Clerkland Project Management Limited | Professional & scientific | 2009 |
| Click Spurr Ltd | Information & communication | 2021 |
| Client ID Limited | Information & communication | 2016 |
| Clinic 22 Ltd | Health & social care | 2016 |
| Clinic Twenty Two Ltd | Health & social care | 2022 |
| Clock Management Ltd | Hospitality | 2025 |
| Close Contact Ltd | Information & communication | 2021 |
| Clyde Built Interiors Ltd | Construction | 2015 |
| Clyde Competitions Ltd | Arts & recreation | 2023 |
| Clyde Renewables Ltd | Real estate | 2026 |
| Clydebuilt Fitness Equipment Limited | Manufacturing | 2015 |
| CM Golf Limited | Wholesale & retail | 2021 |
| CM Plastering & Roughcasting Ltd | Construction | 2018 |
| Cmautomods Ltd | Wholesale & retail | 2026 |
| CMH Transport Limited | Transport & logistics | 1999 |
| CMR Business Services Limited | Professional & scientific | 2021 |
| CN Kavanagh Holdings Ltd | Financial services | 2025 |
| CO2 and Mixed GAS Company Ltd | Administrative & support | 2019 |
| Coach Personal Training Limited | Other services | 2019 |
| Coalhill Enterprises Limited | Real estate | 2020 |
| Coast Entertainments Limited | Arts & recreation | 2012 |
| Cochrane Inn Limited | Hospitality | 2023 |
| Cochrane Inn Property Limited | Real estate | 2025 |
| Codau Building Ltd | Construction | 2025 |
| Cognitio Curae Ltd | Professional & scientific | 2022 |
| Colin Bussey Limited | Hospitality | 2015 |
| College Chambers Limited | Real estate | 2012 |
| College Wynd Limited | Real estate | 2011 |
| Coltart Contracts Limited | Construction | 1982 |
| Colville Engineering Limited | Professional & scientific | 2026 |
| Colvins S.P.S. Limited | Wholesale & retail | 2000 |
| Commerciale Limited | Wholesale & retail | 2025 |
| Commissioning Solutions Scotland Limited | Professional & scientific | 2004 |
| Compare Your Factor Ltd | Households | 2025 |
| Complex Access Ltd | Construction | 2021 |
| Computer Storm Ltd | Information & communication | 2008 |