| Central Labour Services Limited | Transport & logistics | 2019 |
| Centreline Construction (Scotland) Ltd | Construction | 2022 |
| Ceramishield Ltd | Manufacturing | 2025 |
| Cfjj Law Ltd | Real estate | 2004 |
| CFS Holdings (Scotland) Limited | Financial services | 2021 |
| CFW Solasta Ltd | Real estate | 2026 |
| CGS Services Ltd | Professional & scientific | 2015 |
| Challenge Scotland | Other services | 2009 |
| Chaotic Arts Ltd | Arts & recreation | 2024 |
| Chap Properties Ltd | Real estate | 2020 |
| Chapelhall Properties Ltd | Real estate | 2025 |
| Chapell Estates Limited | Construction | 2012 |
| Chapelton Inn Ltd | Hospitality | 2020 |
| Charge Puck Ltd | Manufacturing | 2012 |
| Charlotte Taverns Ltd | Hospitality | 2021 |
| Cheesecake Delights Limited | Manufacturing | 2021 |
| Chelsea Cosmetics Ltd | Other services | 2022 |
| Chilli HUT 218 Limited | Hospitality | 2024 |
| China Court Bakery Glasgow Limited | Manufacturing | 2005 |
| Choice Fire Limited | Manufacturing | 2007 |
| Chris Steele Technology Ltd | Information & communication | 2020 |
| Churros Baby Ltd | Hospitality | 2021 |
| Ciocan Rendering Ltd | Construction | 2026 |
| City Fruit Company Limited | Wholesale & retail | 2012 |
| City PAY Services Ltd | Administrative & support | 2013 |
| Ciuin Therapy Ltd | Health & social care | 2025 |
| CJ Hannah Ltd | Hospitality | 2022 |
| CJ Mortgage and Protection Ltd | Financial services | 2025 |
| CJK Electrical (Scotland) Limited | Construction | 2021 |
| CJR Services (Scotland) Ltd | Other services | 2012 |
| CJS Mortgage & Protect Ltd | Financial services | 2026 |
| CKL Cleaning Services Ltd | Administrative & support | 2019 |
| CL Sports Massage Therapy Ltd | Health & social care | 2025 |
| Clair Property Ltd | Administrative & support | 2014 |
| Claire Mcavoy Aesthetics Limited | Other services | 2024 |
| Clare Consulting Ltd | Administrative & support | 2014 |
| Clark Construction Services Ltd | Construction | 2014 |
| Clark's Quality Foods Limited | Hospitality | 2015 |
| Clarkhall Limited | Hospitality | 2012 |
| Claroma Beauty Ltd | Other services | 2025 |
| Classic Car Sales Scotland Limited | Wholesale & retail | 2023 |
| Clean & Co Collective Limited | Administrative & support | 2026 |
| Cleanmaid Masters Ltd | Administrative & support | 2025 |
| Cleland Car Wash & Sale Ltd | Wholesale & retail | 2022 |
| CLICK4SHOPING Limited | Wholesale & retail | 2025 |
| Clockwise Consultants Ltd | Professional & scientific | 2018 |
| Clockwork Cyber Limited | Information & communication | 2026 |
| Cluaran Associates Limited | Construction | 2022 |
| Club 100 Motherwell Ltd | Hospitality | 2023 |
| Clyde Biosciences Limited | Professional & scientific | 2012 |
| Clyde Fire and Security Ltd | Construction | 2024 |
| Clyde Gardens Developments Limited | Construction | 2021 |
| Clyde GE Ltd | Professional & scientific | 2015 |
| Clyde Property Contracts Limited | Real estate | 2024 |
| Clyde Valley Fuels Ltd | Other services | 2018 |
| Clyde Valley Group Limited | Real estate | 2008 |
| Clyde Valley Property Services Limited | Real estate | 2006 |
| Clyde Valley Pubs Ltd | Hospitality | 2023 |
| Clydebrae Consultancy Limited | Professional & scientific | 2026 |
| Clydebrae Engineering Limited | Professional & scientific | 2024 |
| Clydebuilt Group 2017 Limited | Professional & scientific | 2017 |
| Clydebuilt Manufacturing Ltd | Manufacturing | 2021 |
| Clydeforth Promotional Products Limited | Professional & scientific | 2003 |
| Clydesdale Afterschool Care Limited | Health & social care | 2003 |
| Clydesdale Motor Services Limited | Wholesale & retail | 2026 |
| CM Plastering and Roughcasting Services Ltd | Construction | 2024 |
| CM Timepieces Ltd | Wholesale & retail | 2026 |
| CMB Technical Services Limited | Administrative & support | 2021 |
| CMD Construction Services Ltd | Construction | 2023 |
| CMD Polling Limited | Professional & scientific | 2021 |
| Cmdz Limited | Wholesale & retail | 2017 |
| CML Auto Tints Ltd | Wholesale & retail | 2020 |
| CML Autoworx Ltd | Wholesale & retail | 2026 |
| CML Honda R Spares Ltd | Professional & scientific | 2017 |
| CMW Electrical Services Ltd | Construction | 2014 |
| Cnj-Group Limited | Manufacturing | 2020 |
| Coach Tech Assist Scotland Limited | Wholesale & retail | 2020 |
| Coast 2 Country Campers Ltd | Administrative & support | 2017 |
| Coatdyke Storage Ltd | Real estate | 2018 |
| Cobalt IT Consulting Ltd. | Information & communication | 2021 |
| Coffee Estates Ltd | Other services | 2017 |
| Coffee for Life Ltd | Other services | 2016 |
| Coffee TEC Limited | Wholesale & retail | 2022 |
| Coffeepots (Drive Thru) Limited | Hospitality | 2019 |
| Coffeepots Limited | Wholesale & retail | 2005 |
| Cogs in Motion Limited | Administrative & support | 2025 |
| Colbrook Supplies Direct Ltd. | Wholesale & retail | 2003 |
| Colin Bowman Plastering Services Ltd | Construction | 2025 |
| Collins Financial Ltd. | Financial services | 2018 |
| Columbo & Co (Scotland) Ltd | Administrative & support | 2023 |
| Columbus Reinstatements Ltd | Administrative & support | 2024 |
| Comac Cancer Care Ltd | Health & social care | 2024 |
| Comac Consulting Ltd | Other services | 2019 |
| Comac Group Investments Ltd | Financial services | 2024 |
| Comac Precision Engineering Ltd. | Manufacturing | 2006 |
| Comcat Engineering Ltd. | Wholesale & retail | 1997 |
| Comfort Spaces Ltd | Real estate | 2024 |
| Comm Heat Ltd | Construction | 2020 |
| Commercial Avenue Ltd | Professional & scientific | 2020 |
| Common Blue Ltd | Hospitality | 2018 |