| Burn, Stewart & Co. Limited | Professional & scientific | 1948 |
| C L P Fleet Services Limited | Wholesale & retail | 2020 |
| C.V.S Automotive Ltd | Wholesale & retail | 2025 |
| Cadzow Club Ltd | Arts & recreation | 2022 |
| Caledonia Group Ltd | Construction | 2021 |
| Caledonia Printers West Limited | Manufacturing | 1996 |
| Caledonia Technologies Limited | Information & communication | 2005 |
| Caledonian Residential Property Group Limited | Real estate | 2002 |
| Calila LP | | 2021 |
| Callender Hairdressers Ltd | Other services | 2012 |
| Camair Ltd | Construction | 2014 |
| Canemdu LP | | 2021 |
| Capstone Asset Limited | Real estate | 2024 |
| Car Controls JT Ltd | Wholesale & retail | 2025 |
| Cathkin Equestrian Ltd | Wholesale & retail | 2021 |
| Ccpe Limited | | 2005 |
| Celtic Art Limited | Manufacturing | 1980 |
| Centurion Signs (Holdings) Limited | Professional & scientific | 2017 |
| Centurion Signs (U.K.) Limited | Manufacturing | 1971 |
| CFA Holdings (Scotland) Ltd | Wholesale & retail | 2022 |
| Champfleurie Livery Stables Ltd | Arts & recreation | 2024 |
| Changing Your Mind Ltd | Education | 2021 |
| Chaudhry Sons Limited | Wholesale & retail | 2022 |
| CHD Building Services Ltd | Construction | 2022 |
| Cleanburn Limited | Construction | 2026 |
| Cleaning & Wiping Supplies Ltd. | Wholesale & retail | 2000 |
| Club 12 Limited | Real estate | 1989 |
| Club KIT Print Ltd | Manufacturing | 2022 |
| Clyde Blowers Capital CIV II LP | | 2008 |
| Clyde Blowers Capital CIV III LP | | 2011 |
| Clyde Blowers Capital CIV IV LP | | 2015 |
| Clyde Blowers Capital Co-Investment II LP | | 2008 |
| Clyde Blowers Capital Co-Investment III LP | | 2011 |
| Clyde Blowers Capital Fund II L.P. | | 2008 |
| Clyde Blowers Capital Fund IV LP | | 2015 |
| Clyde Blowers Capital GP II LP | | 2008 |
| Clyde Blowers Capital GP III LP | | 2011 |
| Clyde Blowers Capital IM LLP | | 2007 |
| Clyde Blowers Capital Storm Co-Invest (2013) LP | | 2013 |
| Clyde Blowers Capital Storm Co-Invest (2014) LP | | 2014 |
| Clyde Blowers Capital Storm Co-Invest LP | | 2011 |
| Clyde Blowers Limited | Professional & scientific | 2001 |
| Clyde Fasteners (Holdings) Limited | Manufacturing | 2000 |
| Clyde Health Ltd | Financial services | 2024 |
| Clyde Legacy Property Ltd | Households | 2025 |
| Clyde Valley Community Church (Cvcc) | Other services | 2005 |
| Comares Limited | Professional & scientific | 2002 |
| Commwire Limited | Information & communication | 2012 |
| Compressed Air Contracts (Scotland) Limited | Manufacturing | 2008 |
| Computer Interactive Limited | Education | 2009 |
| Concept Property Letting Ltd | Real estate | 2011 |
| Confidence Plus Ltd | Manufacturing | 2019 |
| Confluence IA Platforms Ltd | Information & communication | 2025 |
| Connekt Group Limited | Construction | 2022 |
| Conscious Creations LLP | | 2019 |
| Consilium Safety UK Ltd | Manufacturing | 2021 |
| Construction Documentation North West Ltd | Professional & scientific | 2017 |
| Construction Photo Documentation Scotland Ltd | Professional & scientific | 2013 |
| Conversionsmart Ltd | Wholesale & retail | 2022 |
| Conversionsmart Property Ltd | Real estate | 2026 |
| Cool Air Solutions EK Ltd | Construction | 2023 |
| Copper Black Coffee Limited | Hospitality | 2015 |
| Corston Sinclair Limited | Wholesale & retail | 1968 |
| Costa Leste Partners LP | | 2014 |
| Countrywide Employee Benefits Ltd | Financial services | 2022 |
| Cova Limited | Hospitality | 2013 |
| Cpsi Scotland Limited | Financial services | 2011 |
| Crawford Associates (Scotland) Limited | Professional & scientific | 2004 |
| Crestline Security Limited | Administrative & support | 2026 |
| Crossbasket Castle Holdings Limited | Real estate | 2011 |
| CUK Audio Limited | Wholesale & retail | 2009 |
| CUK Lighting Ltd | Wholesale & retail | 2006 |
| Curlew Limited | Manufacturing | 2002 |
| Cuthrell Ltd | Hospitality | 2024 |
| CVH Spirits Limited | Manufacturing | 1988 |
| CWC Windows & Doors UK Limited | Construction | 2024 |
| D & D Metal Fabrications Ltd | Manufacturing | 2024 |
| D a Thomson Ltd | Wholesale & retail | 2019 |
| D L W Associates | | 1996 |
| D-Tacq Holdings Limited | Financial services | 2025 |
| D.N.D Property Professionals Limited | Real estate | 2015 |
| Daburn Solutions Limited | Professional & scientific | 2007 |
| Dackno LP | | 2012 |
| Darcy's Equine Assisted Learning Centre C.I.C. | Education | 2016 |
| Dartmouth International Services LP | | 2023 |
| Davidson Security Solutions Ltd | Wholesale & retail | 2022 |
| DCM Fire Limited | Construction | 2017 |
| Deanston Distillery Company Limited | Professional & scientific | 1990 |
| Delta Development 1 Ltd | Construction | 2025 |
| Delta Development Group Ltd | Construction | 2022 |
| Delta Energy Solutions Limited | Construction | 2023 |
| Dent X EK Ltd | Wholesale & retail | 2020 |
| DGL Property Ltd | Real estate | 2025 |
| DH Roofing & Rendering Limited | Construction | 2016 |
| Diamantaire LP | | 2012 |
| Diana Peralta Global Ltd | Professional & scientific | 2019 |
| Digital Health Scotland Limited | Health & social care | 2020 |
| Dimot Demolition Ltd | Construction | 2023 |
| DJF Letting Ltd | Real estate | 2025 |
| DJF Ventures Ltd | Professional & scientific | 2026 |