| A & a Barr | | 1984 |
| A a Henry & Sons Limited | Agriculture & fishing | 2018 |
| A H S Drummond (Glenside) Limited | Agriculture & fishing | 2007 |
| A J Slavin & Sons Limited | Transport & logistics | 2004 |
| A.I.H. (Stranraer) Ltd | Information & communication | 2023 |
| A.T.L.S Services Ltd | Construction | 2025 |
| Absafe Access Limited | Mining & quarrying | 2015 |
| Advance Dermatology Ltd | Professional & scientific | 2021 |
| Agnew Properties (Stranraer) Ltd | Real estate | 2017 |
| Agsgroundworks Limited | Construction | 2026 |
| Alex Coutts Courier Ltd | Administrative & support | 2014 |
| Alexandra Stranraer Limited | Hospitality | 2024 |
| Alexandra Takeaway Stranraer Limited | Hospitality | 2026 |
| ALL Clear Pest Control (Stranraer) Limited | Administrative & support | 2003 |
| Allan Construction Ltd | Construction | 2022 |
| Allan Projects Ltd | Construction | 2026 |
| Allerby Mill Ltd | Agriculture & fishing | 2026 |
| Allison and Sons Ltd | Manufacturing | 2024 |
| Alternative Living Ltd | Information & communication | 2020 |
| Amyze Solutions Ltd | Wholesale & retail | 2025 |
| ANZ Investments Limited | Real estate | 1980 |
| Ardwell Community Kirk | Other services | 2016 |
| Ardwell Glasshouse Ltd | Hospitality | 2022 |
| Ardwell Leisure Limited Partnership | | 2006 |
| Ardwell Marine Limited | Wholesale & retail | 2003 |
| Arkhouse Inn Ltd | Hospitality | 2018 |
| Arkless Enterprises Ltd | Hospitality | 2025 |
| Ashley Sarah O'Neill Ltd | Health & social care | 2023 |
| Asstruckhire Ltd | Administrative & support | 2018 |
| ATD Automotive Ltd | Wholesale & retail | 2026 |
| Auchness Farm | | 1997 |
| Auto Services (Stranraer) Limited | | 1972 |
| Auto Sparks (Stranraer) Ltd | Wholesale & retail | 2014 |
| Autolinks Stranraer Ltd | Wholesale & retail | 2012 |
| Automotive Business Consultancy Limited | Professional & scientific | 2023 |
| Bargain Buys Stranraer Ltd | Wholesale & retail | 2017 |
| Barnkirk Industrial Estate Properties Ltd | Real estate | 2019 |
| BD Energy Consulting Limited | Professional & scientific | 2011 |
| Beer Consultancy Ltd | Professional & scientific | 2025 |
| Beesley Property Solutions Ltd | Construction | 2024 |
| Bespoke Home Finance Ltd | Financial services | 2014 |
| Bill Hurcomb Scanning Limited | Agriculture & fishing | 2012 |
| Blair Agri Ltd | Agriculture & fishing | 2025 |
| Blair Biomass Ltd. | Manufacturing | 2012 |
| Bobby Lammie Ltd | Arts & recreation | 2025 |
| Braefield Collection (Scotland) Ltd | Hospitality | 2026 |
| Brian M. Ramsay Limited | Agriculture & fishing | 1997 |
| Bruce Mouat Ltd | Arts & recreation | 2025 |
| C B Trees & Groundworks Ltd | Construction | 2023 |
| Cairngaan Farms Limited | Agriculture & fishing | 1996 |
| Campbell Rennie Property Limited | Construction | 2017 |
| Castle Kennedy Golf Academy Limited | Arts & recreation | 2009 |
| Castle Street Stranraer Store Limited | Wholesale & retail | 2025 |
| Castle Technologies (Stranraer) Limited | Manufacturing | 2010 |
| Cate Consultancy Ltd | Professional & scientific | 2013 |
| Charles Service & Company Limited | Agriculture & fishing | 2006 |
| Charted Ltd | Professional & scientific | 2022 |
| Chasers PUB (Stranraer) Ltd | Hospitality | 2019 |
| Cool Licks & Hot Drinks Limited | Hospitality | 2017 |
| Coronation Day Centre Limited | Health & social care | 2005 |
| Corra Eggs Ltd | Agriculture & fishing | 2016 |
| Corsewall Castle Farm Limited | Agriculture & fishing | 2017 |
| Crows Nest Catering Limited | Hospitality | 2021 |
| Culgroat Farms | | 1996 |
| D & J Johnston Ltd | Hospitality | 2018 |
| D and L Drummond Limited | Hospitality | 2017 |
| D D Mcharg Ltd | Agriculture & fishing | 2016 |
| D Walsh Plastering Ltd | Construction | 2018 |
| D. Mcharg & SON Limited | Agriculture & fishing | 1963 |
| Dalrymple Developments Limited | Construction | 2023 |
| Damothands Aviation Ltd | Professional & scientific | 2022 |
| Difficult Access Services Ltd | Construction | 2019 |
| DKH Logistics Limited | Mining & quarrying | 2012 |
| DMC Properties Ltd | Financial services | 2024 |
| Douglas Dairy Supplies Limited | Wholesale & retail | 2009 |
| Douglas Family Holdings (UK) Limited | Hospitality | 2022 |
| DPA Developments Ltd | Financial services | 2016 |
| Dunskey Guest House Ltd | Hospitality | 2021 |
| E a Design (Scotland) Limited | Professional & scientific | 2022 |
| E.R.M. Plant Ltd | Administrative & support | 2018 |
| Eastwood Avenue 1965 Limited | Extraterritorial | 2015 |
| Eco GEN Contractors Ltd | Construction | 2020 |
| Eco GEN Pure Limited | Construction | 2019 |
| EEH Transport Limited | Transport & logistics | 2018 |
| Elite Knockinaam Creation Limited | Hospitality | 2023 |
| Faulmech Services Ltd | Manufacturing | 2016 |
| Ffenics (1) Limited | Real estate | 2017 |
| Ffenics Limited | Real estate | 2017 |
| FIG & Olive Stranraer Ltd | Hospitality | 2024 |
| Forward Grazing Ltd | Agriculture & fishing | 2025 |
| Frazer Hare Ltd | Other services | 2011 |
| Froid Ltd | Professional & scientific | 2012 |
| G Beck Welding Limited | Manufacturing | 2007 |
| Galdenoch Farms | | 1999 |
| Galdenoch Farms (2001) | | 2002 |
| Galloway Barn Ltd | Hospitality | 2016 |
| Galloway Cheddar Cheese Company Limited | Extraterritorial | 1989 |
| Galloway Groundworks Ltd. | Administrative & support | 2011 |
| Galloway Plant Hire Limited | Construction | 1994 |
| Galloway Point Ltd. | Hospitality | 2018 |