| Burch Cafe Ltd Ltd | Hospitality | 2025 |
| C Clad (Dumbarton) Ltd | Construction | 2024 |
| C Smith Asset Management Ltd | Real estate | 2026 |
| C&P Consultancy Group Ltd | Professional & scientific | 2025 |
| C.Nicolsonsports Ltd | Arts & recreation | 2025 |
| CAB IT - Consultancy Ltd | Information & communication | 2023 |
| Cadv Limited | Wholesale & retail | 1929 |
| Caledonia Glenlivet Water Company Limited | Professional & scientific | 1935 |
| Caledonian Technology Installations Limited | Administrative & support | 1994 |
| Callaghan Consultancy Ltd | Professional & scientific | 2024 |
| CAM Recovery Ltd | Transport & logistics | 2023 |
| CAM Services 1 Ltd | Administrative & support | 2024 |
| Campbell's Air Conditioning and Refrigeration Limited | Energy | 2001 |
| Campbell's Mechanical Services Limited | Construction | 2003 |
| Caperdonich Distillery Company Limited | Professional & scientific | 1964 |
| Capp Marine Services Ltd | Professional & scientific | 2020 |
| Carberry Transport Ltd. | Real estate | 1998 |
| Carbon Mounts Ltd | Manufacturing | 2015 |
| Cardross Autos Limited | Wholesale & retail | 2024 |
| Cardross Foods Limited | Hospitality | 2019 |
| Cardross Motors Ltd | Wholesale & retail | 2023 |
| Cardross Offshore Services Ltd. | Mining & quarrying | 2011 |
| Cardross Road Valeting Centre Ltd | Administrative & support | 2024 |
| Carman Care | Hospitality | 2000 |
| Carousel Nurseries Limited | Health & social care | 1995 |
| Castle Business Hub Limited | Real estate | 2018 |
| Castlegreen Limited | Real estate | 2017 |
| Cdmasterworks Limited | Information & communication | 2012 |
| CEE Squared Dumbarton Limited | Transport & logistics | 2025 |
| CEE Squared Waste Removal Ltd | Water & waste | 2026 |
| Celestine Property Ltd | Real estate | 2025 |
| Central Consulting Services Ltd | Other services | 2013 |
| Chalmers-Accountants Limited | Professional & scientific | 2022 |
| Chambers Glaziers Limited | Construction | 2020 |
| Change Impact Partners Ltd | Professional & scientific | 2024 |
| CHAOCHAO5356 Limited | Hospitality | 2019 |
| Charles Ingram GUN and Rifle Manufacturer Limited | Professional & scientific | 1992 |
| Charlie Munday Consulting Ltd | Professional & scientific | 2023 |
| Chefco Limited | Administrative & support | 2007 |
| Chivas 2000 | Professional & scientific | 1936 |
| Chivas Brothers International Limited | Professional & scientific | 2019 |
| Chivas Brothers Limited | Manufacturing | 2004 |
| Chivas Brothers Pension Scheme (Trustee) Limited | Professional & scientific | 2012 |
| Chivas Brothers Pernod Ricard | Manufacturing | 2000 |
| Chivas Holdings (IP) Limited | Administrative & support | 2007 |
| Chivas Investments Limited | Professional & scientific | 1990 |
| Chivas Operating Properties 2 LP | | 2016 |
| Chivas Operating Properties LP | | 2013 |
| Chrystal Apartments Dumbarton Ltd | Real estate | 2026 |
| Chrystal RHU Limited | Real estate | 2026 |
| Civil Rights First | Financial services | 2018 |
| Clark Design Architecture Ltd | Professional & scientific | 2020 |
| CLC Fibre Ltd | Professional & scientific | 2020 |
| Clifftop Projects CIC | Arts & recreation | 2020 |
| Clift Investments Ltd | Real estate | 2022 |
| Clipper Trading Ltd | Hospitality | 2016 |
| Club Mango Ltd | Hospitality | 2013 |
| Clyde Contracts Limited | Households | 2013 |
| Clyde Inn Ltd | Hospitality | 2025 |
| Clyde Local Ltd | Wholesale & retail | 2023 |
| Clyde Mailing Ltd | Administrative & support | 2013 |
| Clyde Process Valves Limited | Wholesale & retail | 2003 |
| Clyde Solve Limited | Information & communication | 2025 |
| Clyde Tech Limited | Wholesale & retail | 2026 |
| Clydebank Property Company Limited | Construction | 2004 |
| Clydecraft Ltd | Construction | 2025 |
| Clydemade Ltd | Construction | 2025 |
| Clydeside Couriers Ltd | Transport & logistics | 2026 |
| Cmod Property Group Limited | Real estate | 2025 |
| CMS Renewables Ltd | Administrative & support | 2025 |
| CMS Surveyors Limited | Administrative & support | 2016 |
| COD Holdings Ltd | Real estate | 2026 |
| Colby Construction Limited | Construction | 2000 |
| Come in a Van Ltd | Transport & logistics | 2025 |
| Commercial Door Systems Ltd | Administrative & support | 2017 |
| Complete Paving Requirements (Scotland) Limited | Construction | 2002 |
| Conçu Studio Ltd | Professional & scientific | 2025 |
| Corcoran Investments Ltd | Real estate | 2019 |
| Corinthian Stonemasons Ltd | Manufacturing | 2024 |
| Cosmetic Denture Repair & Design Limited | Health & social care | 2009 |
| Couper Investments Ltd | Real estate | 2022 |
| CPC Energycare Limited | Other services | 2017 |
| CPR Civil Engineering Limited | Construction | 2004 |
| CPR Group Ltd | Construction | 2018 |
| CPR Plant Hire Limited | Administrative & support | 2016 |
| CPR Precast Concrete Products Ltd | Manufacturing | 2018 |
| CPR Resurfacing Ltd | Construction | 2015 |
| CPV Holdings Limited | Manufacturing | 2019 |
| Craigend Nursery Cardross Ltd | Wholesale & retail | 2021 |
| Cravadale View Ltd | Real estate | 2024 |
| CRC Forestry Ltd | Agriculture & fishing | 2022 |
| Creative Media Services Limited | Wholesale & retail | 2016 |
| Crla Property Investments Ltd | Real estate | 2019 |
| Cromech Limited | Professional & scientific | 2022 |
| Crowmac Holdings Ltd | Financial services | 2026 |
| Crowmac Property Ltd | Real estate | 2021 |
| Cuir an CLÒ Ltd | Information & communication | 2025 |
| Curry Club (Scotland) Limited | Other services | 2024 |
| D & J Doherty Limited | Wholesale & retail | 2018 |
| D H Cleaning Services Ltd | Administrative & support | 2015 |