| 1882 Consulting Limited | Professional & scientific | 2024 |
| 2 Mennie Cooks Limited | Administrative & support | 2010 |
| 21 MAC Ltd | Real estate | 2018 |
| 247 Machining Services Ltd | Manufacturing | 2018 |
| 2576 Design Limited | Professional & scientific | 2010 |
| 32ND Ltd | Professional & scientific | 2015 |
| 3BC Consultancy Limited | Information & communication | 2016 |
| 3RSKIN Ltd | Other services | 2023 |
| 3S Scotland Ltd. | Other services | 2017 |
| 429 Limited | Real estate | 2006 |
| 45 Joinery Limited | Construction | 2016 |
| 4M Enviroresponse Ltd | Professional & scientific | 2025 |
| 5 Loons UNI Ltd | Hospitality | 2024 |
| 555 Smiles Ltd | Health & social care | 2026 |
| 5DJ Ltd | Wholesale & retail | 2021 |
| 80S Heritage Diesel Locomotives Ltd | Other services | 2020 |
| 83 Fitness Space Ltd | Arts & recreation | 2023 |
| A & I Anderson (Group) Limited | Administrative & support | 2015 |
| A & I Anderson (Holdings) Limited | Real estate | 1976 |
| A & J Mackie Plant Hire Limited | Wholesale & retail | 2010 |
| A & L Stronach Limited | Manufacturing | 2006 |
| A & R Stagg Ltd | Construction | 2024 |
| A E Mechanical Services Limited | Professional & scientific | 2018 |
| A M Shellfish Limited | Wholesale & retail | 2016 |
| A Macleod Construction Limited | Construction | 2014 |
| A Macleod Group Ltd | Financial services | 2025 |
| A Robson Contracts Ltd | Professional & scientific | 2018 |
| A Taste of Toll House Limited | Manufacturing | 2026 |
| A.J.B (Shetland) Limited | Agriculture & fishing | 2013 |
| AAD Fabrication Ltd | Manufacturing | 2016 |
| AB ARM Estates Ltd | Real estate | 2024 |
| AB Coatings Ellon Ltd | Manufacturing | 2020 |
| AB Fiftyone Ltd | Professional & scientific | 2016 |
| AB51 Carbon Clean Ltd | Wholesale & retail | 2022 |
| Abbeydon Removals Limited | Transport & logistics | 2023 |
| Abco Hosting Services Ltd | Real estate | 2025 |
| ABD Electrical Ltd | Construction | 2023 |
| Aberdeen Autos Limited | Wholesale & retail | 2022 |
| Aberdeen City Developments Ltd | Construction | 2025 |
| Aberdeen Crushing Ltd | Professional & scientific | 2013 |
| Aberdeen Marketing Agency Ltd | Information & communication | 2024 |
| Aberdeen Office Supplies Limited | Wholesale & retail | 2002 |
| Aberdeen Photobooth Ltd | Professional & scientific | 2022 |
| Aberdeen Tool Rental Ltd | Administrative & support | 2026 |
| Aberdeenshire Birth and Baby CIC | Health & social care | 2025 |
| Aberdeenshire Clinical Psychology Ltd | Health & social care | 2020 |
| Aberdeenshire General Cleaning Solutions Ltd | Other services | 2012 |
| Aberdeenshire Hot TUB Hire Ltd | Construction | 2021 |
| Aberdeenshire Taxis Ltd | Transport & logistics | 2019 |
| Abersecure Ltd | Information & communication | 2025 |
| Aberwrap Ltd | Wholesale & retail | 2025 |
| Able Technologies Limited | Information & communication | 1999 |
| Abode Bi-Folding Doors Ltd | Construction | 2013 |
| Abundance Fulfilment Ltd | Transport & logistics | 2026 |
| ABZ Global Perspective Ltd | Wholesale & retail | 2015 |
| Acars Qa/Qc Services Ltd | Professional & scientific | 2019 |
| Ace of Blades 2 Limited | Other services | 2020 |
| Ace of Fades AB51 Limited | Other services | 2026 |
| Ace Subsea Limited | Administrative & support | 2014 |
| ACF Consultancy Limited | Professional & scientific | 2023 |
| Acorn Centre (Inverurie) Limited | Hospitality | 2007 |
| Acorn Transport Limited | Transport & logistics | 1990 |
| ACW (Holdings) Limited | Administrative & support | 2015 |
| AD Executive Consultancy Ltd | Professional & scientific | 2026 |
| Adamson Consulting Engineers Limited | Professional & scientific | 2007 |
| ADC Joinery Services Ltd | Construction | 2023 |
| Advanced Financial Planning Scotland Limited | Financial services | 2010 |
| Adventure First Ltd | Arts & recreation | 2009 |
| AEL Holdings Limited | Professional & scientific | 2008 |
| AER INT. Ltd | Mining & quarrying | 2022 |
| Aerossurance Limited | Professional & scientific | 2014 |
| Aerovue Limited | Extraterritorial | 2014 |
| AF Insights Limited | Professional & scientific | 2018 |
| AFB Contracts Limited | Construction | 2007 |
| Affinity PAT Ltd | Professional & scientific | 2020 |
| Afforsk Enterprises Limited | Agriculture & fishing | 1999 |
| Afraid Knot Ltd | Mining & quarrying | 2024 |
| AGB Survey Solutions Limited | Other services | 2019 |
| AGE Project Consultancy Ltd | Other services | 2018 |
| AGE Reversal Therapies Ltd | Health & social care | 2022 |
| Agsg Services Ltd | Construction | 2025 |
| Ahmed & Ahmed Kebab Ltd | Hospitality | 2025 |
| AJA Welding Services Ltd | Manufacturing | 2022 |
| AJG Property Ventures Ltd | Real estate | 2025 |
| AJS Strength and Wellness Limited | Arts & recreation | 2024 |
| Akicad Services Limited | Professional & scientific | 2009 |
| Alan Cooper Electrical Services Ltd | Construction | 2025 |
| Alan Electrical Services (North East) Limited | Construction | 2010 |
| Alan Mcguinness Enterprises Limited | Professional & scientific | 2012 |
| Alan Napier Ltd. | Construction | 2010 |
| Alan Whiteford Contracts Limited | Construction | 2000 |
| Albex Engineering Limited | Professional & scientific | 2013 |
| Albion Energy Services Ltd | Professional & scientific | 2022 |
| Alexander Air Limited | Transport & logistics | 2016 |
| Alexander Manson & Co LLP | | 2023 |
| Aligned IT Ltd | Information & communication | 2020 |
| Aligned Property Group Ltd | Real estate | 2023 |
| ALL Terrain Venture Engineering Services Limited | Administrative & support | 1999 |
| Allsop Project Services Limited | Professional & scientific | 2014 |
| Alltrucks (Aberdeen) Ltd | Manufacturing | 2011 |