| BEE Sweet (Argyll) Limited | Wholesale & retail | 2022 |
| Beinn an Tuirc Distillers Limited | Manufacturing | 2016 |
| BEN Nevis Bar Limited | Hospitality | 2018 |
| BEN Nevis Bar Trading Company Limited | Hospitality | 2018 |
| BFE Scot Limited | Hospitality | 2016 |
| BID 4 Oban Limited | Administrative & support | 2012 |
| Big Boss Pizza Limited | Hospitality | 2025 |
| Binning & Ball Aquaculture Limited | Professional & scientific | 2014 |
| Black Croft Coffee (Oban) Ltd | Hospitality | 2025 |
| Black Loch Limited | Real estate | 2025 |
| Blackbrook Properties LLP | | 2011 |
| Blaich Logging Limited | Agriculture & fishing | 2013 |
| Blas NA Mara Limited | Hospitality | 2024 |
| Bmac Brickwork Limited | Construction | 2024 |
| Bobmac Golf Limited | Arts & recreation | 2017 |
| Bopa Holdings Limited | Real estate | 2019 |
| Borisov Estates Limited | Real estate | 2020 |
| Braevallich Hydro Limited | Energy | 2010 |
| Bragleenbeg Ltd | Agriculture & fishing | 2017 |
| Bragleenmore Estates LLP | | 2025 |
| Bridge Cafe Oban Ltd | Hospitality | 2020 |
| Broc Environment Ltd | Professional & scientific | 2022 |
| Bruadarach Argyll Ltd | Construction | 2022 |
| Bruadarach Properties Ltd | Real estate | 2022 |
| Bruce-Low Hair Limited | Other services | 2019 |
| Buicks of Arisaig Trading AS the Old Library and Lodge Limited | Hospitality | 2018 |
| Burnside Consulting Ltd. | Information & communication | 2011 |
| Butimak Global Limited | Manufacturing | 2025 |
| C Hodge Limited | Agriculture & fishing | 2000 |
| C J Mallaig Limited | Real estate | 2022 |
| C K Satellite & Aerial Limited | Information & communication | 2012 |
| C S Gourlay Limited | Transport & logistics | 2025 |
| C. Campbell Consultant Limited | Mining & quarrying | 2023 |
| C.J.Auto Repairs Limited | Wholesale & retail | 2006 |
| Cairn Cottage Limited | Real estate | 2022 |
| Calandi Ltd | Hospitality | 2025 |
| Caledonia Safety Solutions Ltd | Professional & scientific | 2026 |
| Caledonian Coaches Limited | Transport & logistics | 2010 |
| Caley Chandlery Oban Limited | Wholesale & retail | 2023 |
| Callum Chaos Limited | Hospitality | 2025 |
| Calum Macleod Building Contractor Ltd | Construction | 2010 |
| Cameron Holidays Ltd | Real estate | 2021 |
| Cameron Smith Landscaping Limited | Administrative & support | 2024 |
| Cameron Surveys Ltd | Professional & scientific | 2015 |
| Campbell Hire Ltd | Administrative & support | 2026 |
| Campbeltown Courier Limited | Extraterritorial | 2018 |
| Campster Fish & Chips Ltd | Hospitality | 2012 |
| Carlin Contract Services (Argyll) Limited | Other services | 2022 |
| Carloway Tweed Limited | Wholesale & retail | 2022 |
| Carol Macniven Limited | Other services | 2021 |
| Carpet Services (Oban) Limited | Wholesale & retail | 2006 |
| Cartvista Ltd | Wholesale & retail | 2025 |
| Casa Anna Ltd | Hospitality | 2026 |
| Catch 22 (Oban) Limited | Hospitality | 2026 |
| Cavity Sealed Unit Co. Limited | Professional & scientific | 1972 |
| Cearban Ltd | Administrative & support | 2013 |
| CG Cleaning Solutions Ltd | Administrative & support | 2026 |
| Chilligrillz Ltd | Hospitality | 2021 |
| Chmd Limited | Hospitality | 2017 |
| CJS4SAFETY Ltd | Professional & scientific | 2024 |
| Claredon Hotel Limited | Hospitality | 2018 |
| Clarity Cleaning Company Oban Ltd | Administrative & support | 2025 |
| Clarity Property Management Ltd | Households | 2026 |
| Claymore Limited | Wholesale & retail | 2004 |
| Claysnow Limited | Real estate | 2005 |
| Clearwater Paddling Limited | Arts & recreation | 2011 |
| CLOUDY2CLEAR Glasgow Ltd | Construction | 2013 |
| CMM Properties & Lettings Limited | Real estate | 2023 |
| Coast Oban Limited | Hospitality | 2015 |
| Coastal Connection Limited | Transport & logistics | 2023 |
| Coastal Connection Oldco LLP | | 2010 |
| Coatsi Chess Ltd | Information & communication | 2023 |
| Codfish Fort William Limited | Hospitality | 2025 |
| Codfish Oban Limited | Hospitality | 2018 |
| Colewell Properties Ltd | Real estate | 2025 |
| Columba Hotel (Oban) Limited | Hospitality | 1996 |
| Columba Publishing Company Limited | Professional & scientific | 1916 |
| Comann Eachdraidh Lios MOR | Arts & recreation | 2002 |
| Confluens Estates Limited | Real estate | 2025 |
| Connecting Scotland CIC | Administrative & support | 2015 |
| Connel Pharmacy Limited | Wholesale & retail | 2005 |
| Cook & Co. (Lismore) Ltd | Professional & scientific | 2025 |
| Cothroman CIC | Arts & recreation | 2013 |
| Cottage Catering (ST Andrews) Ltd | Hospitality | 2017 |
| Cottage Kitchen (Fife) Ltd | Hospitality | 2017 |
| Cozycart Ltd | Wholesale & retail | 2025 |
| Craigard Assets Limited | Real estate | 2023 |
| Craigatin House & Courtyard Limited | Hospitality | 2019 |
| Craine Communications Ltd | Information & communication | 2015 |
| Craobh Enterprises Ltd | Hospitality | 2021 |
| Creagard Builders Limited | Construction | 2006 |
| Creran Homes Ltd | Construction | 2023 |
| Creran Marine Limited | Manufacturing | 2013 |
| Crinan Harbour Association | Other services | 2004 |
| Crioch Ltd | Real estate | 2009 |
| Croft and Castles Properties Ltd | Real estate | 2023 |
| Cromarty Ventures Ltd | Administrative & support | 2024 |
| Crossroads (North Argyll) Care Attendant Scheme | Health & social care | 2002 |
| Crubag Ltd | Manufacturing | 2013 |
| Cruise Loch Linnhe Limited | Transport & logistics | 2021 |