| Cowal Sand & Gravel Ltd. | Mining & quarrying | 2004 |
| Cowal Stoves Ltd | Construction | 2005 |
| Cproperty Investors Ltd | Extraterritorial | 2022 |
| Craft and BE Restful Limited | Education | 2023 |
| Creative Solutions Mechanical and Electrical Limited | Construction | 2014 |
| Criterion Social Limited | Hospitality | 2026 |
| Cromlech Laundry Ltd | Administrative & support | 2012 |
| Crusader Maritime Services Limited | Transport & logistics | 2022 |
| Cryans Building Services Limited | Construction | 2026 |
| Culzean Group Limited | Administrative & support | 2015 |
| Culzean Property Limited | Professional & scientific | 2018 |
| Culzean Services Limited | Manufacturing | 2017 |
| Cunningham Moorings and Fabrication Limited | Administrative & support | 1998 |
| CX Services Ltd | Information & communication | 2019 |
| D W Mechanical Engineering Ltd | Professional & scientific | 2025 |
| Dalriada Monumental Supplies Limited | Administrative & support | 2004 |
| Dare to Care (Cowal) Ltd | Other services | 2021 |
| Darroch BEG Property Ltd | Real estate | 2026 |
| Database Direct Limited | Information & communication | 1997 |
| David Crowe Building Contractor Limited | Construction | 2023 |
| David Scott Marine Ltd | Professional & scientific | 2018 |
| Day&Night Maintenance Services Ltd | Construction | 2025 |
| Deveron Management Ltd | Real estate | 2023 |
| Dexterous Software Limited | Information & communication | 2011 |
| Dirty Laundry Limited | Wholesale & retail | 2020 |
| Discount Floors Dunoon Ltd | Wholesale & retail | 2025 |
| Doon the Watter GIN Ltd | Wholesale & retail | 2019 |
| Drain Tech Ltd | Water & waste | 2019 |
| Drone Flying Authority Ltd | Arts & recreation | 2025 |
| Dryfemount Care Limited | Health & social care | 2017 |
| Dubh MOR Marine Limited | Manufacturing | 2025 |
| Duncan Lauder & SON Limited | Hospitality | 2016 |
| Duncan Mcgarry Family Liaison Training & Consultancy Limited | Administrative & support | 2013 |
| Duncreggan Enterprises Limited | Hospitality | 2008 |
| Dunoon & Cowal Heritage Trust | Arts & recreation | 1992 |
| Dunoon Argyill Limited | Real estate | 2024 |
| Dunoon Argyll Housing Limited | Real estate | 2017 |
| Dunoon Bunkhouse Ltd | Hospitality | 2024 |
| Dunoon Car and Van Ltd | Wholesale & retail | 2026 |
| Dunoon Radio Ltd | Information & communication | 2006 |
| Dunselma Country Estate Limited | Extraterritorial | 2008 |
| Eastern Lines Limited | Transport & logistics | 1999 |
| Easy Empty BAG Ltd | Wholesale & retail | 2024 |
| EAT Street Ltd | Hospitality | 2024 |
| Eirovan Ltd | Hospitality | 2020 |
| EJ Whitton Ltd. | Construction | 2005 |
| Elionis Ltd | Construction | 2026 |
| Emanna Holdings Ltd | Real estate | 2025 |
| Employee Market Ltd | Administrative & support | 2025 |
| Fabscots Limited | Information & communication | 2009 |
| Faclan Ltd | Information & communication | 2026 |
| Ferguson Mitchell Ltd | Professional & scientific | 2022 |
| Fire Risk Design Associates Limited | Public administration | 2021 |
| Firm of Yousaf and Safdar Ltd | Health & social care | 2024 |
| Floriver Properties Ltd | Real estate | 2025 |
| Food From Argyll | Hospitality | 2016 |
| Footloose Adventure (Scotland) Limited | Arts & recreation | 1990 |
| Fostering Technology Limited | Professional & scientific | 2001 |
| Fynewood Ltd | Manufacturing | 2012 |
| G S M Landscapes Ltd | Administrative & support | 2023 |
| Gareloch View Limited | Real estate | 2011 |
| Gilbert Deya Ministries Ltd | Arts & recreation | 2026 |
| Glen Cleaners Limited | Administrative & support | 2024 |
| Glenfinnart Hydro Ltd | Energy | 2015 |
| GM Geomatics Ltd | Construction | 2010 |
| GM Geomatics Services Ltd | Professional & scientific | 2022 |
| Good Guys Recovery Repair Limited | Wholesale & retail | 2025 |
| Good Wood Argyll Limited | Professional & scientific | 2025 |
| Goyo! Limited | Hospitality | 2025 |
| Graham & Co. Holdings Limited | Real estate | 2025 |
| Graham Plastering Ltd | Construction | 2026 |
| Greca Holdings Limited | Information & communication | 2017 |
| GSW Blade Services Ltd | Manufacturing | 2023 |
| GTI Direct Limited | Wholesale & retail | 2022 |
| GWB Mortgages Limited | Financial services | 2026 |
| Half Baked Ltd | Hospitality | 2025 |
| Halls & Bells Ltd | Hospitality | 2025 |
| Hanmcgran Limited | Information & communication | 2016 |
| Hardell Services Limited | Hospitality | 2019 |
| Hensational Ltd | Extraterritorial | 2025 |
| Hibernian Property Management Ltd | Hospitality | 2023 |
| Hirsiset Homes (Scotland) Limited | Construction | 2026 |
| HK HE Ltd | Hospitality | 2026 |
| Hollyberry Properties Limited | Real estate | 2023 |
| Holm Geological Consultancy Limited | Mining & quarrying | 2007 |
| Holy Loch Scottish LLP | | 2023 |
| Industrial Rentals Limited | Water & waste | 2014 |
| Industry Watch Limited | Extraterritorial | 2001 |
| Ingrams Bar Limited | Hospitality | 2018 |
| Innellan Painters Ltd | Construction | 2014 |
| Integrated Computer Services (Scotland) Limited | Professional & scientific | 1994 |
| Islay Property Factors Limited | Construction | 2012 |
| Isle of Barra Shellfish Limited | Agriculture & fishing | 2025 |
| J Pooler Ltd | Professional & scientific | 2016 |
| J&J Rheade Property Holdings (Scot) Ltd | Real estate | 2026 |
| J.K.M. (Paisley) Limited | Wholesale & retail | 2007 |
| J.K.M. Industrial Supply Merchants Limited | Wholesale & retail | 1978 |
| James Foster (Argyll) Limited | Hospitality | 2025 |
| James Gordon Property Limited | Real estate | 2021 |
| Jamie Macfarlane Architecture and Urban Design Limited | Professional & scientific | 2026 |