| TAZ Properties Limited | Hospitality | 2003 |
| TB Fitness Dundee Ltd | Arts & recreation | 2026 |
| TBM Food Ltd | Real estate | 2024 |
| TC Film Productions Limited | Information & communication | 2015 |
| TC MMG Limited | Professional & scientific | 2018 |
| Tccl Lodge | Hospitality | 2012 |
| Tcef Group Limited | Information & communication | 2018 |
| TCO (Dundee) Ltd | Wholesale & retail | 2024 |
| TCO Property Management Limited | Real estate | 2018 |
| TCR Investments Ltd | Administrative & support | 2012 |
| TDI (Dundee Arena) Limited | Real estate | 2023 |
| Tealing Land Holdings Limited | Real estate | 2017 |
| Tealing Paddock Ltd | Agriculture & fishing | 2024 |
| Team Terrible Limited | Information & communication | 2020 |
| Teamtel Ltd | Information & communication | 2024 |
| Tearainte Limited | Information & communication | 2011 |
| Teased Hair Ltd | Other services | 2022 |
| Tech Mavens Ltd | Administrative & support | 2017 |
| Tech One Stop Ltd | Other services | 2026 |
| Tech Repairs Tayside Ltd | Wholesale & retail | 2021 |
| Tech Sage Solutions Ltd | Information & communication | 2018 |
| Techayo Ltd | Information & communication | 2026 |
| Techcorp Technics L.P. | | 2015 |
| Techno Trade L.P. | | 2015 |
| Technocomm Limited | Professional & scientific | 2009 |
| Technolux Universal L.P. | | 2015 |
| Technoport L.P. | | 2015 |
| Technoway Projects L.P. | | 2012 |
| Techscopic Ltd | Wholesale & retail | 2022 |
| Techsupply Pro Ltd | Wholesale & retail | 2026 |
| Tecjet Limited | Professional & scientific | 2003 |
| Tecnex Resources LP | | 2017 |
| Tecops Ltd | Professional & scientific | 2018 |
| Teddy Bear Childcare Ltd | Education | 2022 |
| Teecabs Ltd | Transport & logistics | 2024 |
| Tees Taxis Limited | Transport & logistics | 2010 |
| TEK Jewellery Ltd. | Other services | 2005 |
| Tekware Trading LP | | 2017 |
| Tele Taxis Holdings Limited | Financial services | 2022 |
| Telecom Management Solutions L.P. | | 2012 |
| Telemark Invest L.P. | | 2015 |
| Telfer Joinery Services Ltd | Construction | 2021 |
| Telford Installations Ltd | Construction | 2025 |
| Telfords Landscaping & Building Ltd | Construction | 2022 |
| Telny Commerce LP | | 2015 |
| Telsoft United L.P. | | 2015 |
| Templeton Contracts Ltd | Construction | 2017 |
| Temptations Bakery Ltd | Wholesale & retail | 2026 |
| TEN BIO Limited | Health & social care | 2019 |
| Tenco Management L.P. | | 2012 |
| Tenda Development Co Limited | Wholesale & retail | 2012 |
| Tender Pro Consultancy Ltd | Other services | 2024 |
| Tenten Homes Limited | Construction | 2024 |
| Tenza Zangetsu Ltd | Real estate | 2016 |
| Terlu Solarworks Ltd | Professional & scientific | 2025 |
| Terra Nova Medical Practice LLP | | 2013 |
| Terra Nueva Ltd | Information & communication | 2026 |
| Terralùth Limited | Construction | 2025 |
| Tesla 147 Limited | Hospitality | 2017 |
| Tevco Ltd | Administrative & support | 2025 |
| Texcorp Trade L.P. | | 2015 |
| Texnikos Ltd | Professional & scientific | 2004 |
| Texora UK Ltd | Manufacturing | 2021 |
| TF Scaffolding Ltd | Construction | 2020 |
| TFG Express L.P. | | 2015 |
| Tfim Consulting Limited | Professional & scientific | 2023 |
| TG Propco 1 Ltd | Real estate | 2023 |
| TG Simpson (Ninewells Garage) Limited | Wholesale & retail | 1980 |
| TGC Aberdeen West Limited | Administrative & support | 2020 |
| TGC Forth Valley Limited | Administrative & support | 2019 |
| TGC Holdings Limited | Financial services | 2015 |
| TH Tutors Ltd | Education | 2025 |
| Thai Sun Limited | Hospitality | 2015 |
| Tham's Nails Studio Ltd | Other services | 2025 |
| Thams Nail Studio Ltd | Other services | 2024 |
| That Port Technology GUY Ltd | Information & communication | 2021 |
| That Shed Limited | Other services | 2021 |
| That's Fetch Ltd | Wholesale & retail | 2024 |
| THE 51 Club Limited | Other services | 2022 |
| THE AI Media Centre Ltd | Professional & scientific | 2025 |
| THE Alexander Collection Ltd | Real estate | 2026 |
| THE Alliance for a Cavity-Free Future | Education | 2012 |
| THE Angus Venture Limited | Hospitality | 2021 |
| THE Architectural Survey Company Limited | Professional & scientific | 2024 |
| THE Art Project Ltd | Wholesale & retail | 2022 |
| THE Auld Co Ltd | Hospitality | 2025 |
| THE Authoritative Coach Ltd | Administrative & support | 2024 |
| THE Bach Bistro Limited | Hospitality | 2015 |
| THE Barnhill Pubco Ltd | Hospitality | 2025 |
| THE Barrels Dundee Ltd | Hospitality | 2025 |
| THE Bathroom Company (Edinburgh) Limited | Administrative & support | 2016 |
| THE Bay Diner and Grill Limited | Administrative & support | 2016 |
| THE Black Property Company (UK) Limited | Real estate | 2021 |
| THE Boars Rock Kitchen Ltd | Hospitality | 2024 |
| THE Bookhouse (Monifieth) Ltd | Wholesale & retail | 2004 |
| THE Brae Riding for the Disabled | Health & social care | 2000 |
| THE Broughty Practice Psychology Services Ltd | Health & social care | 2025 |
| THE Bull Glasgow Limited | Hospitality | 2022 |
| THE Bulldog Frog Ltd | Hospitality | 2021 |
| THE Bush Bar 2024 Ltd | Hospitality | 2024 |