| Airdrie PO Limited | Wholesale & retail | 2026 |
| Airdrie Premier Travel Ltd | Transport & logistics | 2026 |
| Airdrie Property Ltd | Real estate | 2024 |
| Airdrie RAW Dog Food Limited | Wholesale & retail | 2019 |
| Airdrie Roofing Services Limited | Construction | 2024 |
| Airdrie Stores Ltd | Wholesale & retail | 2024 |
| Airdrie Vehicle Movers Ltd | Transport & logistics | 2011 |
| Airdrie Wellbeing Hub Ltd | Health & social care | 2024 |
| Airdriebutchers Ltd | Wholesale & retail | 2024 |
| Airdrieonians FC Ltd | Arts & recreation | 1965 |
| Airtech Technical Services Ltd | Manufacturing | 2026 |
| Aitchison Street Supermarket Ltd | Wholesale & retail | 2023 |
| AJ Van Spares Limited | Wholesale & retail | 2026 |
| AJ Windows (Scot) Ltd. | Construction | 2008 |
| AJS Logistics Limited | Transport & logistics | 2018 |
| AK Retail North Ltd | Wholesale & retail | 2021 |
| Alan Jack Ltd. | Hospitality | 2012 |
| Albert Bartlett & Sons (Airdrie) Limited | Agriculture & fishing | 1962 |
| Albert Bartlett & Sons (Leslie) Limited | Real estate | 1962 |
| Albert Bartlett Holdings Limited | Agriculture & fishing | 2016 |
| Albert Bartlett Properties Limited | Financial services | 2019 |
| Aldea Bella (NO.15) Limited | Real estate | 1989 |
| Alderbrae Property Company Limited | Real estate | 1964 |
| Alex France Properties UK Limited | Real estate | 2024 |
| Alex Ross Plasterers (Scotland) Ltd. | Other services | 2019 |
| Alexander Whitelaw & Co Funeral Directors Ltd | Other services | 2023 |
| Aleyna Bar & Grill Ltd | Hospitality | 2024 |
| Aleyna Group Restaurants Ltd | Hospitality | 2023 |
| Almswall Car Wash Limited | Wholesale & retail | 2018 |
| ALN Restoration Ltd | Administrative & support | 2022 |
| Alpha Cell Energy Ltd | Wholesale & retail | 2025 |
| Alpha General Plastics Ltd | Wholesale & retail | 2019 |
| Alphaatomic Ltd | Manufacturing | 2020 |
| Alvie Air Ltd | Construction | 2018 |
| Alyssia's Platinum Homes Ltd | Real estate | 2025 |
| AM Barbers Limited | Other services | 2020 |
| AM Event Support Limited | Water & waste | 2014 |
| AM Logistics Scotland Ltd | Transport & logistics | 2022 |
| AM Saqib Ltd | Hospitality | 2026 |
| Amano Coffee Ltd | Wholesale & retail | 2012 |
| Amarco Property Investments Ltd | Real estate | 2021 |
| AMG Transport Group Limited | Transport & logistics | 2014 |
| Amidz Ltd | Wholesale & retail | 2014 |
| Ammr Taxis Limited | Transport & logistics | 2024 |
| Amts Plumbing and Heating Services Ltd | Construction | 2022 |
| Anas Fastfood Ltd | Hospitality | 2026 |
| Anderson Business Development Limited | Professional & scientific | 2009 |
| Anderson Plastic Surgery Limited | Health & social care | 2020 |
| Andrew Crawford Artist Jeweller Ltd | Wholesale & retail | 2026 |
| Angel Electrical Services (Scot) Limited | Construction | 2020 |
| Angel R Costume Limited | Arts & recreation | 2013 |
| Angus F. Gunn Limited | Manufacturing | 1958 |
| Ankush Kaithal Ltd | Wholesale & retail | 2026 |
| Anne's Emporium Limited | Wholesale & retail | 2021 |
| Anthony Blake Financial Planning Ltd | Professional & scientific | 2026 |
| Anton D Ltd | Information & communication | 2023 |
| Apex Garden Rooms Ltd | Administrative & support | 2020 |
| Apex Interiors Ltd. | Construction | 2011 |
| Apex Roofline Limited | Construction | 2010 |
| Aquila Management Services Estates Limited | Real estate | 2020 |
| Aquila Management Services Limited | Financial services | 2016 |
| Aquila Management Services Property Factoring Limited | Real estate | 2023 |
| AR Instrument Engineering Limited | Professional & scientific | 2014 |
| Arbuckle Utilities Ltd | Construction | 2023 |
| ARC Apartments Ltd | Real estate | 2026 |
| Argon Engineering (Airdrie) Limited | Manufacturing | 1977 |
| Arka Pro Limited | Wholesale & retail | 2026 |
| Armandj Ltd | Arts & recreation | 2021 |
| Arnott Properties Ltd | Real estate | 2025 |
| Arrow Home Developments Ltd | Professional & scientific | 2020 |
| Arrowhead Estate Agents Ltd | Real estate | 2023 |
| Arrowhead Financial Ltd | Financial services | 2021 |
| Art & INK Ltd | Professional & scientific | 2023 |
| Artificial Lawncare Services Scotland Ltd | Other services | 2019 |
| Arts Barbers Ltd | Other services | 2022 |
| AS Convenience Shop Limited | Wholesale & retail | 2024 |
| Asak Solutions Ltd | Information & communication | 2026 |
| Asap Secure Store Ltd | Transport & logistics | 2025 |
| ASB Taxis Ltd | Transport & logistics | 2025 |
| Ashmart Cleaning Services Ltd | Administrative & support | 2026 |
| Ashton Business & Property Limited | Real estate | 2018 |
| Ashton Business Group Ltd. | Construction | 2018 |
| Asnding Stars North Lanarkshire Ltd | Education | 2025 |
| Aspire Developments (Scotland) Ltd | Construction | 2019 |
| Aspire Stays Scotland Ltd | Real estate | 2025 |
| Asset Alarms Ltd | Administrative & support | 2023 |
| Assured Civils Ltd | Construction | 2024 |
| Assured Mobile Tyres Ltd | Wholesale & retail | 2026 |
| Astra Mall Ltd | Wholesale & retail | 2024 |
| Astra Recruitment (Scotland) Ltd | Administrative & support | 2021 |
| Attila & SON Rendering Ltd | Construction | 2022 |
| Attune YOU Ltd | Arts & recreation | 2023 |
| Aurum Capital London Ltd | Wholesale & retail | 2025 |
| Auto Rescue (Scotland) Ltd. | Other services | 2014 |
| Auto SLJ Ltd | Wholesale & retail | 2023 |
| Auto Tasak Ltd | Wholesale & retail | 2023 |
| Automatic Sense Control Limited | Other services | 1999 |
| Automotive GT Car Sales Ltd | Wholesale & retail | 2023 |
| Autonomous IOT Ltd | Administrative & support | 2019 |
| Avah Stays Limited | Real estate | 2025 |