| Clydemart Ltd | Wholesale & retail | 2026 |
| Clydeside Auto & Tyres Ltd | Wholesale & retail | 2019 |
| Clydeside Ceramics Ltd | Extraterritorial | 2025 |
| Clydeside Contracts Ltd | Construction | 2025 |
| Clydeside Corporate Coaching Ltd | Transport & logistics | 2020 |
| Clydeview Motors Ltd | Wholesale & retail | 2010 |
| Clydeview Vehicle Sales Ltd | Wholesale & retail | 2017 |
| Coatweld Consultancy Ltd | Professional & scientific | 2014 |
| Cochrane Medical Practice LLP | | 2021 |
| Cocktails and Dreams Entertainment Ltd | Hospitality | 2025 |
| Coco Candy Ltd | Wholesale & retail | 2026 |
| Coffee by a Limited | Manufacturing | 2024 |
| Cognisance Consulting Limited | Information & communication | 2004 |
| Colintraive Holiday Lets Limited | Other services | 2019 |
| Collins & Quinn Funeral Services Ltd | Other services | 2022 |
| Commercial & Industrial Cleaning Supplies Limited | Wholesale & retail | 2005 |
| Como Studio Ltd | Wholesale & retail | 2026 |
| Compliance and Safety Training Ltd | Professional & scientific | 2014 |
| Corlic Street Supermarket Ltd | Wholesale & retail | 2024 |
| Costcutter (Greenock) Ltd | Wholesale & retail | 2019 |
| Cottage C/C Services Limited | Administrative & support | 2024 |
| Cottage Care Services Scotland Limited | Health & social care | 2011 |
| Cowal Care Services Ltd | Health & social care | 2021 |
| Cowden's Stores Ltd | Wholesale & retail | 2018 |
| CPR Property Ltd | Real estate | 2025 |
| Cradle Care Greenock Ltd | Wholesale & retail | 2024 |
| Craig Cannon Consulting Ltd. | Information & communication | 2010 |
| Craig Molloy Coaching C.I.C. | Arts & recreation | 2024 |
| Craig Morgan Plumbing and Heating Ltd | Construction | 2025 |
| Cranford Electrical Services Ltd | Construction | 2022 |
| CRB Inspection Inverclyde Limited | Other services | 2018 |
| Creek Crosby Productions Limited | Information & communication | 2011 |
| Crighton & Crighton Property Ltd | Other services | 2023 |
| Crimson Kite Consultancy Limited | Professional & scientific | 2016 |
| Cromarty 16 Ltd. | Professional & scientific | 2017 |
| CRS Harbours Ltd | Professional & scientific | 2023 |
| Crudo (Scotland) Ltd | Financial services | 2024 |
| Crystal Clean Inverclyde Ltd | Administrative & support | 2025 |
| CSM Building Renovations Ltd | Construction | 2024 |
| Cso-Services Ltd | Manufacturing | 2025 |
| Culinary Club Ltd | Hospitality | 2025 |
| Curran Landscapes Ltd | Administrative & support | 2025 |
| Custom Autos Ltd | Wholesale & retail | 2025 |
| Customhouse (UK) Properties Limited | Real estate | 2010 |
| Cw&S Holdings Ltd | Administrative & support | 2020 |
| Cwpt Ltd | Wholesale & retail | 2022 |
| D.J. Electrical Services (Inverclyde) Ltd | Construction | 2022 |
| D.M.C Removals Ltd | Transport & logistics | 2017 |
| Daily Fresh Store Ltd | Hospitality | 2026 |
| Daitul Holiday Letting Limited | Other services | 2021 |
| Dalglen (NO. 1000) Limited | Real estate | 2025 |
| Dalglen (NO.1810) Limited | Real estate | 2016 |
| Dalglen (NO.1811) Limited | Real estate | 2017 |
| Dalia Boutique Limited | Wholesale & retail | 2022 |
| Dallachy Properties Ltd | Real estate | 2023 |
| Dallas Carpets Scotland Ltd. | Wholesale & retail | 2002 |
| Dalrymple Capital 2021 Limited | Professional & scientific | 2021 |
| Dalrymple Capital Limited | Professional & scientific | 2017 |
| Dance Champs Stage Events Limited | Other services | 2018 |
| Dance Tours (Scotland) Limited | Other services | 2018 |
| DARE2LEARN Ltd | Education | 2023 |
| Darmol International Limited | Professional & scientific | 2023 |
| Darmol Ltd | Professional & scientific | 2015 |
| Dasg. Ltd | Administrative & support | 2018 |
| Davlorn Food Services Ltd | Hospitality | 2017 |
| Dawncall 1 Limited | Professional & scientific | 2020 |
| Dawncall 2 Limited | Professional & scientific | 2020 |
| Dawncall 3 Limited | Professional & scientific | 2020 |
| Deep River (Engineering) Limited | Professional & scientific | 1994 |
| Deepstream Ltd | Arts & recreation | 2012 |
| Demoneye Group Ltd | Administrative & support | 2025 |
| Demoneye Security Ltd | Administrative & support | 2022 |
| Dempster and Taylor Ltd | Other services | 2014 |
| Descent Grocers Ltd | Wholesale & retail | 2019 |
| Detour Campers & Customs Ltd | Manufacturing | 2022 |
| DG Automotive Services Ltd | Wholesale & retail | 2023 |
| Dhother Property Management Ltd | Real estate | 2025 |
| Digiprint Designs Ltd | Professional & scientific | 2025 |
| Dill Flowers Ltd | Wholesale & retail | 2025 |
| Direct Digital Solutions Ltd | Construction | 2023 |
| Dirty Dawgs 1 Ltd | Other services | 2025 |
| Diverse Assets Holding Ltd | Financial services | 2026 |
| DJ Appliances Limited | Manufacturing | 2024 |
| DJB Microtech Limited | Education | 1985 |
| DN UK Properties Ltd | Real estate | 2025 |
| Dockside Delights Limited | Hospitality | 2025 |
| Dolivo Ltd | Professional & scientific | 2018 |
| Donnachie Slinger Services Ltd | Transport & logistics | 2019 |
| Doughbro (Scotland) Ltd | Manufacturing | 2020 |
| Dream Home Furniture Ltd | Wholesale & retail | 2026 |
| Drumcross Generation Limited | Energy | 2017 |
| Drumfrochar Industrial Limited | Transport & logistics | 2021 |
| DRY Rock Property Holdings Ltd | Real estate | 2024 |
| DS INV Ltd | Wholesale & retail | 2025 |
| Duffy & Co. FM & Business Services Ltd | Real estate | 2013 |
| Duncan Mackenzie Butchers Limited | Wholesale & retail | 2012 |
| Dunn Bros. Ltd | Wholesale & retail | 2021 |
| Dunn's Holdings Ltd | Real estate | 2018 |
| Dunns Testing Limited | Wholesale & retail | 2007 |
| Duno Bars Ltd | Hospitality | 2023 |