| Carnegie Group (Scotland) Limited | Financial services | 2017 |
| Carnegie Mortgage and Protection Ltd | Financial services | 2017 |
| Carnegie Property Ltd | Real estate | 2017 |
| Carnegie Wealth Management Ltd | Other services | 2017 |
| Carnethy Wealth Ltd | Professional & scientific | 2021 |
| Carnoco Ltd | Information & communication | 2023 |
| Carport Driveways Ltd | Construction | 2025 |
| Carraig Licensed Ltd | Hospitality | 2026 |
| Carruthers Mechanical Services Limited | Wholesale & retail | 2024 |
| Casa Kitchens & Bathrooms Ltd | Wholesale & retail | 2018 |
| Casknet Limited | Wholesale & retail | 2023 |
| Castellum Christi Ltd | Real estate | 2022 |
| Castle Gate Taxis Limited | Transport & logistics | 2017 |
| Castle Hill Land Developments Limited | Construction | 2021 |
| Castle Lock & Key Ltd | Administrative & support | 2025 |
| Castleblair Group Ltd | Financial services | 2020 |
| Castleblair Holdings Ltd | Real estate | 2016 |
| Castleton Farm Limited | Agriculture & fishing | 2020 |
| Catalyst Event Production Services Limited | Administrative & support | 2004 |
| Cathcart Associates Energy Limited | Administrative & support | 2013 |
| Cathcart Energy Holdings Limited | Financial services | 2020 |
| CB & RB Limited | Construction | 2025 |
| CB Coating Inspection Limited | Professional & scientific | 2011 |
| CBM Brands Limited | Wholesale & retail | 2022 |
| CCD Marine Limited | Other services | 1993 |
| Ccgsm Ltd | Professional & scientific | 2025 |
| Cedarsoft Ltd | Information & communication | 2010 |
| Ceinwen Campbell Ltd | Wholesale & retail | 2022 |
| Central & West Fife Agricultural Society | Other services | 2004 |
| Central Scotland Joinery Ltd. | Construction | 2003 |
| Cfjk CF Ltd | Financial services | 2019 |
| CFN 2019 Ltd | Financial services | 2019 |
| Cghds Ltd | Administrative & support | 2018 |
| CH Golf Limited | Arts & recreation | 2019 |
| CH Pipework Ltd | Mining & quarrying | 2022 |
| Chad's Chop Shop Ltd | Wholesale & retail | 2014 |
| Chalmers-Allan Consulting Ltd | Professional & scientific | 2025 |
| Chamic Industrial Services Limited | Construction | 1985 |
| Champion Double Glazing Limited | Extraterritorial | 1984 |
| Chapel Street Ltd | Real estate | 2023 |
| Chapelhart Holdings Limited | Households | 2025 |
| Chari Life Ltd | Health & social care | 2023 |
| Charlestown Limekilns Pattiesmuir (CLP) Nature Action Ltd | Arts & recreation | 2024 |
| Charlie Fleming Associates Limited | Professional & scientific | 2025 |
| Chateau Cleaning Services Ltd | Administrative & support | 2024 |
| Chaudhary PVT Hires Ltd | Transport & logistics | 2022 |
| CHB Trading Limited | Other services | 2023 |
| CHC Learning Limited | Education | 2008 |
| Checos Bouncy Castles Ltd | Arts & recreation | 2026 |
| Cheese & Tomatin Ltd | Hospitality | 2018 |
| Chef Elite Ltd | Hospitality | 2018 |
| Chenai Property Services Ltd | Extraterritorial | 2021 |
| Cherrytree Dental Care Limited | Health & social care | 2012 |
| Chesher Courier Services Ltd | Transport & logistics | 2025 |
| Chilesco GEO Consulting Ltd | Professional & scientific | 2025 |
| Chilled Unlimited Limited | Wholesale & retail | 2020 |
| Chilli Bird Ltd | Manufacturing | 2025 |
| Chime Healthcare Limited | Health & social care | 2021 |
| Chiron Human Capital Limited | Professional & scientific | 2025 |
| CHM Heating & GAS Services Ltd | Professional & scientific | 2017 |
| Choice Investments Ltd | Real estate | 2020 |
| Choosesafe Solutions Ltd | Professional & scientific | 2017 |
| Chooyo Ltd | Hospitality | 2025 |
| Chris Dean Ltd | Financial services | 2016 |
| Christian Rural Evangelism Network Limited | Health & social care | 2021 |
| Christie Gillespie Consulting Engineers Ltd | Professional & scientific | 2015 |
| Chrysalis Professional Development Limited | Education | 2006 |
| Ciarys Projects Limited | Other services | 2019 |
| Cicak International Ltd | Professional & scientific | 2021 |
| Cinarta Ltd | Information & communication | 2024 |
| Cinema Build Systems Limited | Construction | 2018 |
| Cipherer Ltd | Professional & scientific | 2022 |
| City Alloys Limited | Professional & scientific | 2024 |
| City Builds (Edinburgh) Ltd. | Construction | 2016 |
| City Hotels (Dunfermline) Limited | Hospitality | 2004 |
| Civil and Planning Surveys Ltd | Construction | 2026 |
| Cjkr Property Limited | Real estate | 2024 |
| CL Garden Ltd | Hospitality | 2025 |
| CL Inst Ltd | Manufacturing | 2022 |
| CL Project Services Ltd | Professional & scientific | 2025 |
| CL Protection Ltd | Administrative & support | 2026 |
| Clairmark Limited | Real estate | 2002 |
| Clarik Limited | Wholesale & retail | 2013 |
| Clarinda's Tea Room Limited | Hospitality | 2013 |
| Clarity Business Insights Limited | Professional & scientific | 2026 |
| Clarity House Limited | Other services | 2001 |
| Clarityloop Limited | Information & communication | 2025 |
| Clean Scene Ltd | Administrative & support | 2018 |
| Clean Start Valeting Ltd | Other services | 2019 |
| Cleanpar UK Housing Services Ltd | Administrative & support | 2025 |
| Clearanse Store Ltd | Wholesale & retail | 2023 |
| Cleocat Limited | Professional & scientific | 2014 |
| Clevans Music Limited | Arts & recreation | 2017 |
| Cleveden Cars Limited | Wholesale & retail | 1997 |
| CLICK4CONVEYANCING Limited | Professional & scientific | 2007 |
| Clifford Clark Limited | Professional & scientific | 2025 |
| Clinic 59 Limited | Other services | 2025 |
| Clipper Tech Limited | Wholesale & retail | 1990 |
| Cloud Colony Games Ltd | Information & communication | 2019 |
| Cloud Skin Beauty and Aesthetics Limited | Other services | 2025 |