| Taghan Ltd | Education | 2024 |
| Tailored Time and Care Ltd | Health & social care | 2022 |
| Tajiri Ltd | Real estate | 2017 |
| Take 1 Scenic Services (Scotland) Limited | Information & communication | 2024 |
| Take Your Marks Limited | Education | 2017 |
| Talka Property Limited | Real estate | 2022 |
| Tamara Limited | Wholesale & retail | 2024 |
| Tambinis Couriers Ltd | Transport & logistics | 2025 |
| Tamera Gibson Ltd | Transport & logistics | 2022 |
| TAN Allure 4 Limited | Other services | 2020 |
| TAN Rooms Ltd | Other services | 2024 |
| Tandoori HUT Charleston Limited | Hospitality | 2019 |
| Tandoori Touch Limited | Wholesale & retail | 2020 |
| Tangerine Taverns Limited | Hospitality | 2016 |
| Tannadice Motors Limited | Other services | 2016 |
| Tanned UP Ltd | Other services | 2022 |
| Tannochbeg Limited | Real estate | 2014 |
| Tanyeli Cuisine Ltd | Hospitality | 2017 |
| TAP Inn Dundee Ltd | Hospitality | 2025 |
| Tara Catering Services Ltd | Hospitality | 2022 |
| Tarafdar Vision Limited | Health & social care | 2026 |
| Taran Guitars Limited | Manufacturing | 2020 |
| Tarax Technology Limited | Wholesale & retail | 2008 |
| Taraxasun Limited | Real estate | 2024 |
| Tarazed LP | | 2017 |
| Targeted Approach Limited | Professional & scientific | 2016 |
| Tartan Cell Technologies Limited | Information & communication | 2019 |
| Tartan Limited | Wholesale & retail | 2025 |
| Tartan Links Golf Tours Limited | Administrative & support | 2016 |
| Tartan Links Travel Limited | Transport & logistics | 2025 |
| Tarvos Energy Limited | Real estate | 2016 |
| Task Jobs Limited | Information & communication | 2025 |
| Tassty Ltd | Hospitality | 2022 |
| Taste With US Ltd | Hospitality | 2025 |
| Tastee Chops Limited | Manufacturing | 2025 |
| Tastimate Ltd | Hospitality | 2024 |
| Tasty Union Ltd | Hospitality | 2025 |
| Tatha Properties Ltd | Real estate | 2025 |
| Tauraus Ltd | Wholesale & retail | 2025 |
| Tavadia Limited | Other services | 2011 |
| Tavdee Limited | Hospitality | 2024 |
| Tavernwhitfield Limited | Hospitality | 2025 |
| Taxi Dundee Limited | Transport & logistics | 2024 |
| Taxon Merchants L.P. | | 2015 |
| Taxport Express L.P. | | 2015 |
| TAY Biosciences Ltd | Professional & scientific | 2024 |
| TAY Commercial Limited | Real estate | 2009 |
| TAY Communications Limited | Information & communication | 2004 |
| TAY Country Travel Ltd | Transport & logistics | 2017 |
| TAY Couriers Ltd | Transport & logistics | 2025 |
| TAY Digital Ltd | Information & communication | 2012 |
| TAY Dundee Investments Limited | Real estate | 2017 |
| TAY Firth Taxis Limited | Transport & logistics | 2025 |
| TAY Fishers Limited | Hospitality | 2025 |
| TAY Gleaming Services Ltd | Administrative & support | 2026 |
| TAY Horizons Limited | Health & social care | 2017 |
| TAY Horticulture Limited | Wholesale & retail | 2023 |
| TAY Hospitality Ltd | Hospitality | 2021 |
| TAY Hotel (Dundee) LLP | | 2011 |
| TAY Hotel Ltd | Hospitality | 2018 |
| TAY Investment Taxis Limited | Transport & logistics | 2008 |
| TAY Kitchen Ltd | Hospitality | 2024 |
| TAY Lifting Services Ltd | Construction | 2021 |
| TAY Properties Limited | Real estate | 2004 |
| TAY Psychology LLP | | 2021 |
| TAY Roofing & Building Ltd | Construction | 2014 |
| TAY Skyline Limited | Real estate | 2018 |
| TAY Square Properties Ltd | Real estate | 2018 |
| TAY Taxis Limited | Transport & logistics | 2024 |
| TAY Technologies Ltd | Information & communication | 2025 |
| TAY Textiles (1998) Limited | Wholesale & retail | 1998 |
| TAY Therapeutics Limited | Professional & scientific | 2020 |
| TAY Utilities Limited | Construction | 2022 |
| TAY Valley Contracts Ltd | Construction | 2023 |
| TAY Veterinary Centre Limited | Professional & scientific | 2015 |
| TAY Wellbeing Limited | Health & social care | 2024 |
| Tay-Fit Ltd | Construction | 2025 |
| Taybank Properties Limited | Real estate | 2024 |
| Taybuild Ltd | Manufacturing | 2018 |
| Taycare at Home Limited | Health & social care | 2012 |
| Taydrill Limited | Other services | 2017 |
| Tayfire Foods Ltd | Wholesale & retail | 2026 |
| Tayflex Ltd | Wholesale & retail | 2016 |
| Tayforge Property Ltd | Real estate | 2026 |
| Tayforged Ltd | Information & communication | 2025 |
| Tayforth Holdings Limited | Real estate | 2023 |
| Tayforth LLP | | 2011 |
| Tayforth Management Ltd | Real estate | 2025 |
| Tayforth Property Developments Limited | Real estate | 1994 |
| Tayfusion Ltd. | Information & communication | 2005 |
| Taygas Group Ltd | Construction | 2026 |
| Taygas Limited | Wholesale & retail | 2008 |
| Tayglass Solutions Ltd | Construction | 2024 |
| Taygreen Limited | Professional & scientific | 2026 |
| Tayguard Security Ltd | Administrative & support | 2026 |
| Tayhausen Limited | Real estate | 1980 |
| Taylaw Scotland Limited | Professional & scientific | 2015 |
| Taylink Taxis Ltd | Transport & logistics | 2025 |
| Taylor Couriers Ltd | Transport & logistics | 2025 |
| Taylor Properties Group Ltd | Real estate | 2025 |