| THE Summer Musical Experience Ltd | Arts & recreation | 2025 |
| THE Tile Fixing Company Ltd. | Construction | 2007 |
| THE Vital Spark (Scotland) Limited | Construction | 2004 |
| THE Waterproofing Design Company Ltd | Professional & scientific | 2024 |
| THE WEE BUS Company Ltd | Transport & logistics | 2019 |
| THE WEE Farm Hire Limited | Administrative & support | 2024 |
| THE WEE Farm Limited | Financial services | 2024 |
| THE WEE Farm Livery Limited | Agriculture & fishing | 2025 |
| THE WEE Wine Bar Ltd. | Other services | 2023 |
| THE Wellness Rooms Retreats Ltd | Arts & recreation | 2025 |
| THE Wellness Rooms TWR UK Ltd. | Arts & recreation | 2024 |
| THE World’S Strongest Ltd | Arts & recreation | 2024 |
| THE Yoga Unit Limited | Other services | 2024 |
| Thermochill Services Ltd | Construction | 2021 |
| Thermonet Limited | Transport & logistics | 2008 |
| Thistle and Tablet Limited | Wholesale & retail | 2025 |
| Thistle Short Stays Ltd | Hospitality | 2021 |
| Thomas Apartments Ltd | Real estate | 2025 |
| Thomas Cuthell & Sons Limited | Other services | 2011 |
| Thomson Properties 7 Ltd | Real estate | 2016 |
| Thonnan Limited | Manufacturing | 2024 |
| Throp Financial Planning Ltd | Professional & scientific | 2024 |
| Thundertop Games Ltd | Information & communication | 2023 |
| Thusa Contract Ltd | Manufacturing | 2020 |
| Timber Components (UK) Ltd. | Manufacturing | 1976 |
| Timber Concepts Ltd. | Administrative & support | 2011 |
| Time for Bespoke Solutions Limited | Professional & scientific | 2006 |
| Titanic Honour and Glory Limited | Arts & recreation | 2013 |
| TJB Electrical Solutions Ltd | Construction | 2022 |
| TJH Solutions Ltd | Construction | 2022 |
| TM Technical Design Ltd | Professional & scientific | 2021 |
| TMA Engineering (Scotland) Limited | Professional & scientific | 2023 |
| TNQ Solutions Ltd | Professional & scientific | 2024 |
| Togail Roofing & Cladding Ltd | Construction | 2019 |
| Tolbooth Property Ltd | Real estate | 2018 |
| TOM Aitinn Ltd | Professional & scientific | 2022 |
| TOM Martin Studio Limited | Professional & scientific | 2019 |
| Tony's Tile House Falkirk Ltd. | Wholesale & retail | 2010 |
| Top a Nails (FK) Limited | Other services | 2020 |
| Top a Nails Falkirk Limited | Other services | 2026 |
| Top a Nails Ltd | Other services | 2025 |
| Top Class Recruitment Ltd. | Administrative & support | 2012 |
| Topline Hub Ltd | Wholesale & retail | 2023 |
| Toptec Design & Build Co. Ltd | Construction | 2020 |
| Toro Gaucho House Limited | Hospitality | 2026 |
| Torra Scotia Sports Ltd. | Wholesale & retail | 2003 |
| Torrance Marketing Ltd | Information & communication | 2016 |
| Tostar Ltd | Hospitality | 2017 |
| Total Refreshment Solutions Limited | Manufacturing | 1997 |
| TP Exclusive Developments Limited | Construction | 2020 |
| TP Fitness Ltd | Arts & recreation | 2018 |
| TP Joinery Services Limited | Construction | 2018 |
| TP Real Estate Ltd | Real estate | 2022 |
| Traceroute Ltd | Information & communication | 2026 |
| Trademark Renewables (Scotland) Ltd | Energy | 2024 |
| Tradie App Ltd | Professional & scientific | 2025 |
| Traist Technologies Ltd | Information & communication | 2025 |
| Trakworx Utility Services Ltd | Construction | 2016 |
| Transition Insight Partners Ltd | Professional & scientific | 2026 |
| Transport KG Ltd | Transport & logistics | 2024 |
| Transportad Ltd | Transport & logistics | 2021 |
| Treadmax Limited | Other services | 2015 |
| Trelton Ltd | Hospitality | 2018 |
| Trends Personal Shopper Limited | Administrative & support | 2021 |
| Trio and ME Ltd. | Manufacturing | 2016 |
| Trolley Jack Services Ltd. | Administrative & support | 2001 |
| Trueman Solutions Ltd | Construction | 2025 |
| Truly Scrumptious Designer Cakes Ltd | Wholesale & retail | 2018 |
| Trusite Ltd | Information & communication | 2023 |
| Trustlink Parcel Ltd | Transport & logistics | 2025 |
| Trustys (Scotland) Limited | Other services | 2016 |
| Tryst Community Sports Club Limited | Arts & recreation | 2014 |
| Tryst Training and Consultancy Ltd | Education | 2021 |
| TSC Estates Limited | Real estate | 2019 |
| Tude Ltd | Information & communication | 2018 |
| Tudit Limited | Information & communication | 2024 |
| Tuhantran Limited | Other services | 2024 |
| Tulliallan Property Investment Ltd | Real estate | 2024 |
| Tulliallan Sawmills Ltd | Agriculture & fishing | 2026 |
| Two Salmon Ltd. | Real estate | 2023 |
| Tzari Global Ltd | Extraterritorial | 2020 |
| U Store (Scotland) Limited | Real estate | 1999 |
| UBA Solutions Limited | Information & communication | 2025 |
| UFRACTION8 Limited | Manufacturing | 2017 |
| Uisge MOR Whisky Company Ltd | Wholesale & retail | 2025 |
| UK MAP Centre LLP | | 2018 |
| Unexploded Limited | Other services | 2023 |
| Unified Health & Safety Consultants (Scotland) Ltd | Professional & scientific | 2016 |
| Union INN(2018) Limited | Hospitality | 2018 |
| Union Upholstery (Scotland) Ltd. | Manufacturing | 2026 |
| Union Upholstery Ltd. | Manufacturing | 2013 |
| United Parcel Limited | Transport & logistics | 2025 |
| United Vintage Limited | Wholesale & retail | 2025 |
| Unity Mortgages Ltd | Financial services | 2012 |
| Unitypaws Limited | Wholesale & retail | 2024 |
| Universal Electrical (Scotland) Ltd | Construction | 2022 |
| Universal Installations (Scotland) Ltd. | Construction | 2023 |
| Universal Water & GAS Solutions Ltd | Construction | 2025 |
| Unlikeotherai Ltd | Manufacturing | 2026 |
| Update Your Home UK Limited | Professional & scientific | 2022 |