| Biomics Ltd. | Professional & scientific | 2004 |
| Birchwynd Limited | Real estate | 1999 |
| Bison Aberdeen Limited | Professional & scientific | 2021 |
| Black Bull (Inverurie) Limited | Administrative & support | 2016 |
| Blackford Craft Distillery Ltd | Manufacturing | 2016 |
| Blacklion Trade Ltd | Construction | 2023 |
| Blarick Consultancy Ltd | Professional & scientific | 2026 |
| BLF Engineering Services Ltd | Manufacturing | 2019 |
| Bliss Aberdeen Ltd | Other services | 2012 |
| Blue Flame Heating (Grampian) Ltd. | Professional & scientific | 2014 |
| Blue Turtle Ltd | Mining & quarrying | 2019 |
| Bluebetty Inc Ltd | Arts & recreation | 2024 |
| Bluefield Technology Limited | Construction | 2016 |
| BM Subsea Solutions Ltd | Professional & scientific | 2012 |
| BMC Commercial (Scotland) Ltd | Wholesale & retail | 2023 |
| Body Rebalance Ltd | Other services | 2025 |
| BON Accord Contracts Ltd | Construction | 2023 |
| Bonnie Golf Clothing Limited | Wholesale & retail | 2022 |
| Booth Scotland Limited | Construction | 2015 |
| Botm Ltd | Wholesale & retail | 2023 |
| Boutique Farm Bothies Limited | Hospitality | 2022 |
| Braco West Limited | Administrative & support | 2018 |
| Breakout Games (Aberdeen) Limited | Arts & recreation | 2019 |
| Breaslann Services Ltd | Information & communication | 2025 |
| Breeze Media Ltd. | Information & communication | 1998 |
| Brian Mcleod Electrical Services Limited | Manufacturing | 2007 |
| Brian Wilson (Ellon) Limited | Construction | 2002 |
| Briarwood Asset Finance Limited | Financial services | 2016 |
| Bright Spark Endeavours Limited | Administrative & support | 2009 |
| Brimmond Limited | Manufacturing | 1996 |
| Brimmond Middle East Limited | Manufacturing | 2025 |
| Brockloch Investments Ltd | Real estate | 2025 |
| Broichan Ltd | Mining & quarrying | 2022 |
| Browell Services Ltd | Mining & quarrying | 2026 |
| BSF Detailing Ltd | Administrative & support | 2024 |
| BSG Technical Ltd | Professional & scientific | 2025 |
| Buckie Butchers Ltd | Manufacturing | 2026 |
| Budget Kitchens & Bathrooms Limited | Wholesale & retail | 2025 |
| Bundl UK Ltd | Wholesale & retail | 2025 |
| Bune Careers Ltd | Information & communication | 2025 |
| Burnhead Risk Consulting Ltd. | Professional & scientific | 2017 |
| Burnside Wind Limited | Professional & scientific | 2012 |
| Burnwood Consulting Ltd | Other services | 2011 |
| Burr Joinery Services Ltd | Construction | 2022 |
| BW Accountancy Services Limited | Professional & scientific | 2025 |
| C & M Nicol Ltd. | Manufacturing | 2000 |
| C & W Contractors Ltd. | Construction | 2005 |
| C&Gsafety&Training Ltd | Public administration | 2020 |
| C. Anderson Agri & Forestry Ltd | Agriculture & fishing | 2022 |
| C.A.A.S. Holdings Limited | Financial services | 2020 |
| C.E.B. Property Care Ltd. | Construction | 2003 |
| CA Dallas Services Ltd | Hospitality | 2017 |
| Cabin Equestrian Centre Limited | Arts & recreation | 2008 |
| Cafe 83 Limited | Hospitality | 2018 |
| Cairn Cleaning & Ironing Limited | Other services | 2015 |
| Cairn Consultancy Ltd | Professional & scientific | 2025 |
| Cairn Lark Services Limited | Administrative & support | 2016 |
| Cairn Training (Aberdeen) Limited | Professional & scientific | 2010 |
| Cairndon Limited | Administrative & support | 2015 |
| Cairngorm Accounting Ltd | Professional & scientific | 2024 |
| Cairnie Services Limited | Professional & scientific | 2026 |
| Caledonia Residential Properties Ltd | Hospitality | 2025 |
| Caledonian Global Advisory Ltd | Professional & scientific | 2024 |
| Caledonian Global Group UK Ltd | Financial services | 2024 |
| Caledonian Global Investments Ltd | Financial services | 2024 |
| Caledonian Global Real Estate Ltd | Construction | 2024 |
| Caleycon Ltd | Professional & scientific | 2025 |
| Cameron Engineering Ltd | Professional & scientific | 2018 |
| Cameron Hayes Limited | Other services | 2021 |
| Campbells of Kintore Ltd | Hospitality | 2021 |
| Camvo 124 Limited | Administrative & support | 2019 |
| Camwater Limited | Construction | 1994 |
| Cardamom Indian Takeaway Ltd | Hospitality | 2019 |
| Carla Mcleod Project Consulting Limited | Professional & scientific | 2023 |
| Carmain Consulting Services Ltd | Professional & scientific | 2023 |
| Carmichael Bookkeeping Services Limited | Professional & scientific | 2017 |
| Carnie Bees Ltd | Agriculture & fishing | 2023 |
| Carpe Diem 1690 Ltd | Construction | 2025 |
| Carriages Engineering Ltd | Professional & scientific | 2023 |
| CAS Property Group Ltd | Real estate | 2021 |
| CAS Property North Ltd | Real estate | 2022 |
| Casper's Cradle Limited | Information & communication | 2022 |
| CB Public Sector Solutions Limited | Administrative & support | 2023 |
| CB Rentals Limited | Administrative & support | 2023 |
| CCS Geops Ltd | Professional & scientific | 2016 |
| CE Flow Ltd | Professional & scientific | 2021 |
| Celerum Limited | Administrative & support | 2013 |
| CEM and NIL Limited | Hospitality | 2025 |
| Central Taxis (Inverurie) Ltd | Transport & logistics | 2021 |
| CF Solutions Ltd | Professional & scientific | 2024 |
| CFB Asset Support Ltd | Manufacturing | 2026 |
| Cfmg Limited | Professional & scientific | 2008 |
| Chalmtech Instrumentation & Control Ltd. | Professional & scientific | 2011 |
| Chalmtech Residential Property Limited | Real estate | 2021 |
| Chambers Completion Properties Ltd | Real estate | 2022 |
| Chapel Farms Properties Limited | Administrative & support | 2013 |
| Chapman Outdoor Solutions Ltd | Administrative & support | 2020 |
| Charlestown Walkies Limited | Arts & recreation | 2025 |
| Charley's Sweet Treats Ltd | Hospitality | 2025 |
| Chelsea Lane Inverurie Ltd | Construction | 2024 |