| 1123 Edin Ltd. | Transport & logistics | 2005 |
| 1330 Taxis Ltd. | Transport & logistics | 2014 |
| 1881 Club CIC | Arts & recreation | 2024 |
| 1ST Step Ltd | Wholesale & retail | 2022 |
| 1ST Unicorns Consultant Limited | Information & communication | 2025 |
| 2 Marshmallows Limited | Other services | 2020 |
| 21C Scotland Limited | Administrative & support | 2005 |
| 272 Edin Ltd. | Professional & scientific | 2004 |
| 3D MOT Centre Ltd | Wholesale & retail | 2020 |
| 3D2D Events Limited | Administrative & support | 2024 |
| 3G Strategy Ltd | Construction | 2006 |
| 3R Together Ltd | Information & communication | 2013 |
| 462 Edin Ltd. | Extraterritorial | 2004 |
| 56 Degree Insight Ltd | Professional & scientific | 2019 |
| 56 Newington Ltd | Other services | 2017 |
| 7TH Cloud Ltd | Information & communication | 2026 |
| 903 Taxis Ltd. | Professional & scientific | 2006 |
| A Class Barber Edinburgh Limited | Other services | 2022 |
| A J B Johnston & Co Ltd | Real estate | 2022 |
| A&I Renovations Ltd | Construction | 2025 |
| A&M Holdings S.P.A. Ltd | Hospitality | 2026 |
| A&R (Scotland) Limited | Hospitality | 2025 |
| A&S Global Ventures Ltd | Wholesale & retail | 2025 |
| A&T Enterprise Ltd | Wholesale & retail | 2025 |
| A. B. Brown & Partner | | 1979 |
| A.T. Gilbertson Ltd | Professional & scientific | 2018 |
| AAW Administration Services Ltd | Administrative & support | 2023 |
| AB Coaching and Consulting Limited | Professional & scientific | 2020 |
| Abacus Accountancy & Bookkeeping Limited | Professional & scientific | 2006 |
| Abacus Nursery Limited | Education | 1996 |
| Abacus Property Factors Ltd | Real estate | 2014 |
| Abbey Print and Design Limited | Manufacturing | 2003 |
| Abbott Gibson Property Ltd | Real estate | 2024 |
| ABC Cabs Limited | Transport & logistics | 2016 |
| ABC Capital Ventures | Financial services | 2021 |
| ABE Investing Ltd | Real estate | 2022 |
| ABE1875 Limited | Construction | 2019 |
| Abidha Properties Limited | Real estate | 2009 |
| Above and Beyond Mentoring Limited | Professional & scientific | 2023 |
| Academic Engineering Consultancy Ltd | Professional & scientific | 2023 |
| Accessible Living Solutions Ltd | Construction | 2018 |
| Accident Recovery Scotland Limited | Wholesale & retail | 2024 |
| Accounting & Taxation Service Ltd | Professional & scientific | 2009 |
| Accountsability Limited | Information & communication | 2018 |
| Acme Project Management Ltd | Professional & scientific | 2012 |
| Adam Appointments Limited | Administrative & support | 2002 |
| Adam Property Investments Ltd | Real estate | 2025 |
| Adderley Creative Ltd | Professional & scientific | 2025 |
| Adopt-A-Monument Limited | Education | 2015 |
| Adriano & Marisa Ltd. | Wholesale & retail | 2004 |
| ADS Decorators Ltd | Construction | 2019 |
| Advantage Academy Limited | Health & social care | 2025 |
| Ady-Vasea Ltd | Hospitality | 2026 |
| Aeclinicalservices Ltd | Professional & scientific | 2024 |
| Affly Ltd | Information & communication | 2026 |
| Afit Athletic Ltd | Arts & recreation | 2020 |
| Agawa Ltd | Professional & scientific | 2019 |
| Agentic Shield Ltd | Information & communication | 2025 |
| AI Osha Ltd | Professional & scientific | 2022 |
| Aitchison Electrical Services Ltd | Construction | 2025 |
| AK7 Construction Ltd | Construction | 2017 |
| AKSA23 Ltd | Real estate | 2024 |
| AL & MS Brown Ltd. | Professional & scientific | 2015 |
| Al's Bistro Company Limited | Hospitality | 2019 |
| Alboe Ltd | Construction | 2011 |
| Alexander Executive Travel Ltd | Transport & logistics | 2025 |
| Alexander Mckenzie Limited | Administrative & support | 2015 |
| Alfonso's Limited | Hospitality | 2022 |
| Alicia's House of Paws Ltd | Administrative & support | 2021 |
| Alien Communications Ltd | Wholesale & retail | 2020 |
| Alison Sherry Consulting Ltd | Administrative & support | 2016 |
| Alive Services Ltd | Professional & scientific | 2018 |
| ALL About Drains Limited | Professional & scientific | 2014 |
| ALL Clean (Leith) Ltd. | Administrative & support | 2003 |
| ALL Towed UP Recovery Ltd | Other services | 2025 |
| ALL Trades Scotland Limited | Construction | 2014 |
| Allan Shiels Limited | Construction | 2025 |
| Alloymaster (Scotland) Ltd | Manufacturing | 2016 |
| Almond Branch Developments Limited | Construction | 2019 |
| Altitude Digital Solutions Ltd | Professional & scientific | 2024 |
| AM Lettings Ltd | Real estate | 2010 |
| Amamina Ltd | Hospitality | 2025 |
| AMANAT1 Ltd | Transport & logistics | 2019 |
| Amara Inspection Services Ltd | Professional & scientific | 2013 |
| Ameila's Rose Ltd | Wholesale & retail | 2022 |
| Ammsted Property Limited | Real estate | 2026 |
| AMY Morrow Fitness Ltd | Arts & recreation | 2023 |
| Ancrum Trades Ltd | Construction | 2003 |
| Andrew Hall Plasterers Ltd | Construction | 2013 |
| Apogee Demolition Ltd | Construction | 2026 |
| Applied Engineering Design Limited | Professional & scientific | 2011 |
| Arcadia Pods Ltd | Manufacturing | 2023 |
| Archaeology Scotland | Education | 2004 |
| Archer Property Consultants Limited | Professional & scientific | 2021 |
| Arlia Property Group Limited | Real estate | 2025 |
| Armadilla Accommodation Ltd | Manufacturing | 2023 |
| Armadilla Ltd | Manufacturing | 2023 |
| Armour of Light Limited | Health & social care | 2014 |
| Arnott Property Ltd | Real estate | 2017 |
| ASG Taxis Ltd. | Extraterritorial | 1998 |