| THE Coffee Club Ayrshire Ltd | Hospitality | 2025 |
| THE Community Connections Education & Wellbeing Group Limited | Health & social care | 2022 |
| THE Compliance Organisation Limited | Construction | 2018 |
| THE Cook School Scotland Limited | Hospitality | 2007 |
| THE Curated Consultancy Ltd | Professional & scientific | 2019 |
| THE Curious Squirrel Ltd | Wholesale & retail | 2017 |
| THE Dent MAN Ayrshire Ltd | Wholesale & retail | 2025 |
| THE Dress Cleaning Company Ltd | Administrative & support | 2021 |
| THE East Ayrshire Coalfield Environment Initiative | Professional & scientific | 2005 |
| THE FAB Food Group Limited | Wholesale & retail | 2015 |
| THE Finance Game Limited | Real estate | 2025 |
| THE Fish People (Scotland) Limited | Wholesale & retail | 2008 |
| THE Garage (Ayrshire) Ltd | Arts & recreation | 2021 |
| THE Garden Room at Ramstane Farm Ltd | Wholesale & retail | 2022 |
| THE Golden Arrow (Kilmarnock) Limited | Hospitality | 2026 |
| THE Holistic Grooming Academy Ltd | Other services | 2018 |
| THE Kavanagh Group Ltd | Wholesale & retail | 2015 |
| THE Killie Community Ltd | Education | 2015 |
| THE Kilmarnock PIE Property Company Limited | Real estate | 2011 |
| THE Kitchen Architect Limited | Wholesale & retail | 2015 |
| THE Know HOW Company (UK) Limited | Professional & scientific | 2001 |
| THE LAB by Rooted Dental Ltd | Health & social care | 2024 |
| THE Last Minute Dalry Ltd | Wholesale & retail | 2013 |
| THE Learning and Wellbeing Psychology Practice Ltd | Health & social care | 2026 |
| THE LED LAB Ltd | Wholesale & retail | 2025 |
| THE Little Margarita Truck Limited | Hospitality | 2019 |
| THE Loft Creative Studios Limited | Professional & scientific | 2012 |
| THE Logo Farm Ltd | Wholesale & retail | 2023 |
| THE Lookout Cafe Troon Ltd | Extraterritorial | 2025 |
| THE Lookout Troon Ltd | Extraterritorial | 2025 |
| THE Marketing Cafe Ltd | Professional & scientific | 2012 |
| THE Montgomery Group (Kilmarnock) Limited | Financial services | 2024 |
| THE Motorhome Club Ltd | Other services | 2007 |
| THE Number Plate Specialists Limited | Wholesale & retail | 2025 |
| THE Pamper POD Ltd | Other services | 2022 |
| THE Park Hotel Ayrshire Limited | Hospitality | 2013 |
| THE Perfume Counter Limited | Wholesale & retail | 2020 |
| THE Portland Arms (Scotland) Ltd. | Hospitality | 2013 |
| THE Power Manager UPS Limited | Construction | 2024 |
| THE Revive Bar Limited | Other services | 2025 |
| THE Robert Burns World Federation Limited | Arts & recreation | 1999 |
| THE Roofstore Ecom Ltd | Construction | 2024 |
| THE Saxophone Shop Ltd | Wholesale & retail | 2020 |
| THE SH Blind Company Ltd | Manufacturing | 2009 |
| THE Sheep Game Ltd | Wholesale & retail | 2020 |
| THE Shutter Room Ltd | Wholesale & retail | 2021 |
| THE Smacks Group Ltd | Hospitality | 2023 |
| THE Solutions on Demand Group Ltd | Information & communication | 2007 |
| THE Sporting Club (Caledonia) Limited | Other services | 2026 |
| THE Strength Sanctuary Ltd | Arts & recreation | 2024 |
| THE Tartan Campervan Company Limited | Manufacturing | 2016 |
| THE Thistle Scotland Ltd | Hospitality | 2023 |
| THE Trisaas Group Ltd | Professional & scientific | 2017 |
| THE Turadh Tea Company Ltd | Wholesale & retail | 2022 |
| THE Tutoring Academy UK Ltd | Education | 2023 |
| THE Unit KA1 Ltd | Real estate | 2023 |
| THE Unseen Barriers Foundation | Education | 2025 |
| THE Water Point (West of Scotland) Limited | Hospitality | 2010 |
| THE Water Sports Academy Ltd | Education | 2024 |
| THE Website Folk Ltd | Information & communication | 2025 |
| THE WEE Food Shack Ltd | Hospitality | 2022 |
| THE WEE Gift Shop Ltd | Wholesale & retail | 2019 |
| THE Wellington Inn (Kilmarnock) Ltd | Hospitality | 2015 |
| THE Weston Kilmaurs Limited | Hospitality | 2023 |
| THE Weston Kilmaurs PUB Ltd | Hospitality | 2026 |
| THE Wheatsheaf Inn (Symington) Ltd | Hospitality | 2013 |
| THE Wool-Sak Limited | Wholesale & retail | 2008 |
| THE Workshop Code Co Ltd | Information & communication | 2026 |
| Theatre Alliance Limited | Arts & recreation | 2020 |
| Theatre Alliance Productions Limited | Arts & recreation | 2026 |
| Thecafevictoria Ltd | Construction | 2022 |
| Thermoworx Ltd | Wholesale & retail | 2015 |
| Third EYE Services Ltd | Construction | 2022 |
| Thirdpart Investments Ltd. | Real estate | 2011 |
| Thistle Shutters Ltd | Construction | 2026 |
| THJ (Machinery) Limited | Wholesale & retail | 2015 |
| Thomas C Stewart LLP | | 2008 |
| Thomas Murray Agricultural Engineers Ltd | Wholesale & retail | 2022 |
| Thomco Engineering Limited | Professional & scientific | 2013 |
| Thomson Hunter Associates Ltd | Professional & scientific | 2011 |
| Thomson Legal Recruitment Company Limited | Administrative & support | 2014 |
| Thomson Vehicle Hire Ltd. | Administrative & support | 2025 |
| Thomson's Artisan Meats Ltd | Manufacturing | 2020 |
| Thomson's Online Limited | Hospitality | 2012 |
| Thorley Stephenson Limited | Professional & scientific | 2016 |
| Thorntonhall Civil Engineering Ltd | Construction | 2026 |
| Thorntoun (2008) Limited | Financial services | 2008 |
| Thorntoun (Ayrshire) Limited | Health & social care | 2016 |
| Thorntoun Estate Limited | Professional & scientific | 2007 |
| Thorntoun Limited | Health & social care | 1991 |
| Three Accountancy Ltd | Professional & scientific | 2025 |
| Tidal Links Ltd | Manufacturing | 2020 |
| Tidal Links Waste Management Ltd | Water & waste | 2025 |
| Tiling Trade Supplies Limited | Wholesale & retail | 2025 |
| Timber Valley Pods Ltd | Hospitality | 2021 |
| Timbershop (Ayrshire) Ltd | Wholesale & retail | 2019 |
| Timbertec Construction Ltd | Construction | 2014 |
| Time for ME, Angela Wood Ltd. | Health & social care | 2020 |
| Time for YOU AYR Ltd | Other services | 2024 |
| Time for YOU Kilmarnock Ltd | Other services | 2016 |