| Agant (Scotland) Ltd | Financial services | 2023 |
| Agant Finance Limited | Information & communication | 2024 |
| Agant Limited | Financial services | 2026 |
| AGF Sport and Fitness Ltd | Other services | 2018 |
| AGL Haulage Ltd | Transport & logistics | 2021 |
| AGM Financial Services Limited | Professional & scientific | 2017 |
| Agna Wellness Ltd | Other services | 2025 |
| Agri & Chainsaws Limited | Wholesale & retail | 2022 |
| Agri-Magri Private LP | | 2016 |
| Agri-Pharma UK Ltd | Extraterritorial | 2019 |
| AHM Plant Sales Ltd | Other services | 2015 |
| AI Taxi Services Limited | Transport & logistics | 2025 |
| Air FD Limited | Professional & scientific | 2019 |
| Air Terminal Transfer Ltd | Transport & logistics | 2024 |
| Aird's Hotel Ltd | Hospitality | 2022 |
| Aire Distribution Ltd | Wholesale & retail | 2025 |
| Airtel Estate LP | | 2016 |
| Airth Highland Gathering (1999) Limited | Arts & recreation | 1999 |
| Airth Mech Services Ltd | Manufacturing | 2017 |
| Aisee Collaborative Ltd | Education | 2024 |
| AJC Strategy Consulting Ltd | Professional & scientific | 2025 |
| Ajdamilai Scotland Limited | Transport & logistics | 2020 |
| AJQ Catering Ltd. | Hospitality | 2015 |
| AK Garage Services Ltd | Manufacturing | 2025 |
| AL Rafayo Food Ltd | Hospitality | 2023 |
| AL Security Ltd | Administrative & support | 2015 |
| Al-Mac Property Limited | Construction | 2005 |
| Alan Banks Ltd | Other services | 2015 |
| Alan DOW Associates Ltd | Professional & scientific | 2017 |
| Alan Hutchison Photography Ltd | Professional & scientific | 2011 |
| Alan J Rodger Ltd | Professional & scientific | 2025 |
| Alba Diagnostics Limited | Manufacturing | 2026 |
| Albion Drilling Group Ltd | Construction | 1986 |
| Albion Drilling Holdings Ltd | Extraterritorial | 2017 |
| Albion Vehicle Wash Engineers (Central) Ltd. | Other services | 2007 |
| Albyn House Limited | Real estate | 2022 |
| Alcorn Anaesthetics Ltd | Health & social care | 2019 |
| Aleda Trading LP | | 2016 |
| Alex Brewster Electrical Ltd | Construction | 2020 |
| Alex Brewster Limited | Construction | 2010 |
| Alex Mcdonald Transport Ltd. | Transport & logistics | 2003 |
| Alexander (Scotland) & Co EOT Trustees Limited | Financial services | 2023 |
| Alexander (Scotland) & Co Limited | Wholesale & retail | 2001 |
| Alexander International Investment Ltd | Real estate | 2024 |
| Alfatelle Logistics LP | | 2016 |
| Algarve Candle Company Ltd | Wholesale & retail | 2025 |
| Algrove Developments (Scotland) Ltd. | Real estate | 2000 |
| ALH & Sons Ltd | Financial services | 2022 |
| Alhambra Engineering Ltd | Professional & scientific | 2015 |
| Alia Projects LP | | 2016 |
| Aliana's Food Ltd | Hospitality | 2020 |
| Alison Piper Ltd | Professional & scientific | 2024 |
| Alister MAC Ltd | Professional & scientific | 2020 |
| Alkmeon LP | | 2016 |
| Allan River Shared Enterprise Ltd. | Real estate | 2010 |
| Allan Water Construction Limited | Construction | 2007 |
| Allan Water Homes (Cambusbarron) Limited | Construction | 2020 |
| Allan Water Homes (Chryston) Limited | Construction | 2020 |
| Allan Water Homes (Heartlands) Limited | Construction | 2017 |
| Allan Water Homes Limited | Construction | 1988 |
| Allan Water Investments Ltd | Real estate | 2018 |
| Allan Water Limited | Real estate | 1984 |
| Allan Water Trading Ltd | Construction | 2011 |
| Allanwater Chiropractic Clinic Limited | Health & social care | 2004 |
| Allanwater Pubs Limited | Real estate | 2021 |
| Alliance Property Management Ltd | Hospitality | 2025 |
| Alnoor Network Ltd | Wholesale & retail | 2024 |
| Alpha Consulting Team | | 2008 |
| ALPHAC3 Limited | Administrative & support | 2012 |
| Altena Solutions LP | | 2016 |
| Altrium Professional Ltd | Professional & scientific | 2022 |
| AM Spraying Limited | Construction | 2025 |
| Amber Blue East Central Limited | Administrative & support | 2011 |
| Ambercove Limited | Administrative & support | 2010 |
| Ambereast Group LP | | 2016 |
| American Rapid Profit Providers | | 2009 |
| Amica Sales LP | | 2016 |
| Amity Hospitality Limited | Professional & scientific | 2018 |
| Amlytica Data Solutions Ltd | Information & communication | 2025 |
| Amnis Catering Ltd | Hospitality | 2023 |
| AMS Group Holdings Limited | Administrative & support | 2013 |
| Amtelle Communication LP | | 2016 |
| AMY Craig Podiatry Limited | Health & social care | 2024 |
| AMY Knowles Brown Ltd | Professional & scientific | 2018 |
| AN Golden Gate Ltd | Other services | 2023 |
| Anccé Accountants Ltd | Professional & scientific | 2025 |
| Anderson Ogilvie Joiners and Building Contractors Ltd | Construction | 2021 |
| Anderson PB Limited | Real estate | 2024 |
| Andrew Anderson & Sons Funeral Directors Limited | Other services | 2014 |
| Andrews Palazzo Ltd | Real estate | 2023 |
| Andronovo Holdings Ltd | Financial services | 2026 |
| Andy Nicol's Clubhouse Ltd | Administrative & support | 2025 |
| Angling Active Limited | Wholesale & retail | 1999 |
| Angus Events Ltd | Other services | 2017 |
| Anivance Consulting Ltd | Professional & scientific | 2025 |
| Anna & Fritz Limited | Information & communication | 2012 |
| Anna Crampin Limited | Administrative & support | 2025 |
| Antler Cctv & Security Solutions Ltd | Information & communication | 2020 |
| Apex Auto Tech (Stirling) Ltd | Wholesale & retail | 2010 |
| Apex Construction and Property Consultants Ltd | Professional & scientific | 2023 |