| Ciao Bonzi Ltd | Hospitality | 2022 |
| Ciaomcac Ltd | Hospitality | 2025 |
| Circular Communities Scotland Ltd | Other services | 2004 |
| Circular Enterprises Limited | Other services | 2022 |
| Citizen Literacy Community Interest Company | Education | 2020 |
| City (Market Street) Limited | Hospitality | 2012 |
| City Falkirk Limited | Hospitality | 2012 |
| City Wide Contracts Ltd | Construction | 2020 |
| Citydon Group LP | | 2016 |
| Civil Engineering Contractors Association (Scotland) | Other services | 1997 |
| CJ Stone Ltd | Manufacturing | 2019 |
| CJM Property Refurb Ltd | Real estate | 2020 |
| CJS Decon Services Ltd | Health & social care | 2024 |
| CJS Surgical Ltd | Administrative & support | 2014 |
| Cjsurgical Limited | Health & social care | 2023 |
| CKR Plumbing & Heating Limited | Construction | 2022 |
| CL Servers Ltd | Information & communication | 2017 |
| Clan Artisan Ltd | Wholesale & retail | 2022 |
| Clanbridge Limited | Real estate | 2007 |
| Clansman BAR(2018) Limited | Hospitality | 2018 |
| Clarence Street Tattoo Limited | Other services | 2019 |
| Claresta Hotels (UK) Limited | Hospitality | 2024 |
| Clarity Wealth Services Limited | Financial services | 2012 |
| Clark Electronics Limited | Manufacturing | 2011 |
| Claud Hamilton Electrical Services Limited | Construction | 1960 |
| Claythorn Services LP | | 2013 |
| CLB Properties Limited | Real estate | 2013 |
| Clean Rite Scotland Ltd | Administrative & support | 2024 |
| Clear Coast Consulting Ltd | Information & communication | 2018 |
| Clear Path Properties Ltd | Real estate | 2024 |
| Clear Pro Organization LP | | 2016 |
| Clear Sustainable Futures Limited | Administrative & support | 2017 |
| Clearanail Limited | Manufacturing | 2025 |
| Clearvalue Investments Limited | Professional & scientific | 2022 |
| Cleo Cleaners Ltd. | Administrative & support | 2012 |
| Clever Courier Crew Limited | Transport & logistics | 2025 |
| Cloud Ecosse Limited | Information & communication | 2012 |
| Clover Assets LP | | 2016 |
| Cluaran HCS Limited | Health & social care | 2020 |
| Clàr-Innis Foundation | Education | 2025 |
| CML Energy Limited | Professional & scientific | 2018 |
| Coatbridge Limited | Real estate | 2019 |
| Coating Pro Ltd | Construction | 2023 |
| Coats Medical Service Limited | Health & social care | 2022 |
| Cockburn Advisory Services Limited | Professional & scientific | 2019 |
| Cocorion Ltd | Real estate | 2023 |
| Coffee Inn Ltd | Wholesale & retail | 2019 |
| Coffee Politik CIC | Wholesale & retail | 2018 |
| Colchester Projects LP | | 2017 |
| Colin Swain Ltd | Construction | 2011 |
| College Development Network | Education | 1993 |
| Colleges Scotland | Education | 1993 |
| Collington Scotland Ltd | Other services | 2026 |
| Collinz Electrical Services Ltd | Construction | 2026 |
| Collymoon Craft Limited | Manufacturing | 2022 |
| Comandante Films Ltd | Information & communication | 2022 |
| Combor Holding LP | | 2016 |
| Comer Farm Limited | Other services | 2022 |
| Commercia Limited | Construction | 1986 |
| Commercial Common Agencies LP | | 2016 |
| Commexus Ltd | Health & social care | 2013 |
| Common Ground Games Limited | Arts & recreation | 2012 |
| Compact Outstanding Limited | Administrative & support | 2019 |
| Compass Geographics Limited | Information & communication | 2001 |
| Competency Framework Solutions Ltd | Information & communication | 2026 |
| Comtech IT Ltd | Information & communication | 2016 |
| Concrete Art Ltd | Extraterritorial | 2015 |
| Concrete Preparation Ltd. | Extraterritorial | 2011 |
| Coniston Systems LP | | 2017 |
| Connaghan Plumbing & Heating Ltd | Construction | 2020 |
| Connect Devices Limited | Information & communication | 2014 |
| Connes Trade LP | | 2016 |
| Construction Materials Consultants Limited | Construction | 1992 |
| Contempo Ltd | Wholesale & retail | 2009 |
| Contra World Limited | Construction | 2020 |
| Contract Scotland Holdings Limited | Financial services | 2021 |
| Contract Scotland Limited | Administrative & support | 1998 |
| Control Management Systems Limited | Administrative & support | 2026 |
| Controlled Environment Cleaning Ltd | Administrative & support | 2026 |
| Controlpro Ltd. | Professional & scientific | 2014 |
| Cooler Air Services Limited | Energy | 1982 |
| Copperfield PUB Co Ltd | Hospitality | 2026 |
| Copylab Employee SIP Ltd | Professional & scientific | 2017 |
| Copylab Group Limited | Financial services | 2023 |
| Copylab Holdings Limited | Other services | 2015 |
| Copylab Limited | Professional & scientific | 2006 |
| Coracle Services Ltd | Hospitality | 2021 |
| Corinthia Interiors Limited | Manufacturing | 2020 |
| Corinthian TS Ltd | Administrative & support | 2013 |
| Cornerstone Community Church Stirling Ltd | Other services | 2012 |
| Cornwallis Business Services Ltd | Professional & scientific | 2018 |
| Corrieri's (Stirling) Limited | Hospitality | 2025 |
| Corrinne Muir Interiors Limited | Manufacturing | 2014 |
| Corshon Trade LP | | 2016 |
| Counselus International Ltd | Administrative & support | 2018 |
| Countesswells Management Company Limited | Administrative & support | 2017 |
| Country Kitchens Scotland Ltd. | Construction | 2003 |
| Coveway Limited | Real estate | 2004 |
| Cowane's Hospital Trading Limited | Hospitality | 2011 |
| Cowie Commercial Rents Ltd | Real estate | 2021 |