| 1981 Ventures Limited | Professional & scientific | 2019 |
| 20/20 (International) Limited | Professional & scientific | 2009 |
| 2D Sports Limited | Arts & recreation | 2008 |
| 3 Sigma Limited | Professional & scientific | 1999 |
| 32 Media (Scotland) Limited | Information & communication | 2014 |
| 38TH House Ltd | Wholesale & retail | 2020 |
| 3S Aberdeen Ltd | Administrative & support | 2020 |
| 4SUBSEA UK Limited | Mining & quarrying | 2019 |
| A & a Civils Limited | Construction | 2018 |
| A Barclay Engineering Services Ltd | Professional & scientific | 2024 |
| A Brixton Engineering Ltd | Professional & scientific | 2026 |
| A Christie Subsea Ltd | Other services | 2022 |
| A Helping Hand (Scotland) Limited | Administrative & support | 2016 |
| A J Green Vehicle Repairs Ltd | Wholesale & retail | 2025 |
| A&Ac Holdings Limited | Construction | 2023 |
| A. & J. Robertson (Granite) Limited | Manufacturing | 1963 |
| A. Beattie Engineering Services Limited | Manufacturing | 1998 |
| A.S.K Rentals Aberdeen Ltd | Real estate | 2024 |
| AB Engineering Services Ltd | Professional & scientific | 2026 |
| AB Intervention Services Ltd | Information & communication | 2020 |
| AB Scaff Limited | Construction | 1994 |
| AB32 Foods Limited | Hospitality | 2019 |
| AB32 Takeaway Ltd | Hospitality | 2019 |
| Aberbuild Limited | Construction | 2005 |
| Aberclean Plant & Sweeper Hire Limited | Administrative & support | 2013 |
| Abercrombie Orthodontics Limited | Health & social care | 2025 |
| Aberdeen Ahead Ltd | Information & communication | 2023 |
| Aberdeen Blueberry Wellness CIC | Education | 2022 |
| Aberdeen Boiler Company Limited | Construction | 2018 |
| Aberdeen Breast Clinic Limited | Real estate | 2015 |
| Aberdeen Business Limited | Wholesale & retail | 2018 |
| Aberdeen Cooling Company Ltd | Manufacturing | 2019 |
| Aberdeen Driving School Ltd | Education | 2025 |
| Aberdeen Electrical Services Limited | Construction | 1998 |
| Aberdeen Energy Ventures Ltd | Professional & scientific | 2025 |
| Aberdeen Intelligence Ltd | Information & communication | 2025 |
| Aberdeen Retailers Limited | Wholesale & retail | 2019 |
| Aberdeen Roughnecks Limited | Mining & quarrying | 2009 |
| Aberdeen Scaffolding Limited | Professional & scientific | 2009 |
| Aberdeen Wellbeing Academy Ltd | Education | 2025 |
| Abermac Limited | Real estate | 2012 |
| Abracabeats Ltd | Education | 2026 |
| ABZ Electrical Solutions Ltd | Construction | 2022 |
| Ac-Bc Musictech Ltd | Information & communication | 2019 |
| Acchatwin Engineering Ltd | Other services | 2022 |
| Acergy Construction Services UK Ltd | Construction | 2026 |
| Aceso Lifestyle Medicine Limited | Other services | 2018 |
| ACM82 Logistics Ltd | Mining & quarrying | 2016 |
| Acumen Employee Benefits Limited | Professional & scientific | 2019 |
| Acumen Financial Planning Limited | Administrative & support | 2001 |
| Adaptive Surveys Limited | Professional & scientific | 2021 |
| Afor Services Limited | Professional & scientific | 2008 |
| Aftech Developments Ltd | Professional & scientific | 2015 |
| AGR Decom Ltd | Professional & scientific | 2026 |
| AGS Energy Consulting Limited | Administrative & support | 2017 |
| AH Asset Solutions Limited | Wholesale & retail | 2017 |
| AH Contract Services Ltd | Professional & scientific | 2015 |
| AIK Property Group Ltd | Real estate | 2026 |
| Aiken Reid Group Ltd | Professional & scientific | 2025 |
| AJT Electrical Ltd | Construction | 2018 |
| Akkora Limited | Hospitality | 2026 |
| Alan Law Consultancy Limited | Professional & scientific | 2024 |
| Alan Mearns Electrical Limited | Construction | 2003 |
| Alan Rutherford Wealth Management Limited | Professional & scientific | 2013 |
| Alatis Solutions Ltd | Professional & scientific | 2022 |
| Albatros Catering Limited | Hospitality | 2025 |
| Albyn Eatery Ltd | Hospitality | 2023 |
| Alfred Cheyne Engineering Limited | Manufacturing | 1996 |
| ALL Ahead Ltd | Professional & scientific | 2024 |
| ALL Round Property Maintenance Services Ltd | Administrative & support | 2017 |
| Allan Electrical Services Aberdeen Ltd. | Construction | 2017 |
| Allied Perimeter Safety Netting Limited | Professional & scientific | 2014 |
| Allocmate Ltd | Professional & scientific | 2021 |
| Altera Infrastructure Arendal Holdings Limited | Financial services | 2022 |
| Altera Infrastructure Ffta Holdings Limited | Financial services | 2022 |
| Altera Infrastructure Fpso Holdings Limited | Financial services | 2022 |
| Altera Infrastructure FSO Holdings Limited | Financial services | 2020 |
| Altera Infrastructure Production Holdings Limited | Financial services | 2020 |
| Altera Infrastructure Voyageur Holdings Limited | Financial services | 2023 |
| Altera Voyageur Production Limited | Mining & quarrying | 2007 |
| AM Beds Limited | Wholesale & retail | 2017 |
| AM Consulting Engineers Ltd | Professional & scientific | 2012 |
| Ameton Ltd | Professional & scientific | 2025 |
| AMO Technologies Ltd | Information & communication | 2012 |
| Ampersand Structural Design Ltd | Professional & scientific | 2023 |
| AN Stokes Physio Ltd | Health & social care | 2022 |
| Andall Engineering (Aberdeen) Limited | Professional & scientific | 2011 |
| Andrew Shepherd Joinery Limited | Construction | 2017 |
| Andy NP Anderson Ltd | Professional & scientific | 2022 |
| Andybache Property Ltd | Real estate | 2025 |
| Angeley Engineering Limited | Professional & scientific | 2015 |
| Angus Business Ltd | Wholesale & retail | 2023 |
| ANN Inspired Care Ltd | Health & social care | 2014 |
| Anvaya Engineering Limited | Professional & scientific | 2013 |
| Apex Rugby Academy Ltd | Arts & recreation | 2021 |
| Apex Tubulars Limited | Wholesale & retail | 2007 |
| Appache Consulting Ltd | Construction | 2019 |
| Arasain Ltd | Real estate | 2020 |
| Archbell Ltd. | Professional & scientific | 2021 |
| Archer Elemental UK Limited | Professional & scientific | 2024 |