| Topwright Transport Ltd | Transport & logistics | 2026 |
| Torch Services Ltd | Financial services | 2022 |
| Torchwood Industries Limited | Professional & scientific | 2010 |
| Torq Routesetting Ltd | Arts & recreation | 2021 |
| Torridon Developments Limited | Real estate | 2014 |
| Total Ground Care Gardening Limited | Administrative & support | 2016 |
| Totstars Scotland Limited | Education | 2025 |
| Toucan Scotland Ltd. | Wholesale & retail | 2000 |
| Touchdown Admin Services Ltd | Other services | 2015 |
| Tourland Impex L.P. | | 2013 |
| Tourway Trading LP | | 2017 |
| Tower Rigging Limited | Manufacturing | 2014 |
| Town & Country Leasing Limited | Real estate | 2012 |
| Townburg Trading L.P. | | 2016 |
| Townroad Experts L.P. | | 2015 |
| Townshend Bars Limited | Hospitality | 2017 |
| Townshend Leisure Ltd | Hospitality | 2019 |
| Townshend Property Holdings Ltd | Financial services | 2022 |
| Townway Development L.P. | | 2015 |
| TP Joiners and Builders (Dundee) Ltd | Manufacturing | 2023 |
| TP15 Limited | Administrative & support | 2013 |
| Tqw&E Limited | Hospitality | 2024 |
| TRA Bar Ltd | Hospitality | 2024 |
| Traade Limited | Wholesale & retail | 2023 |
| Trace Oilfield Services Limited | Professional & scientific | 2006 |
| Track.One (Dundee) Limited | Wholesale & retail | 2012 |
| Trackflow Ltd | Construction | 2013 |
| Tracy Williams Therapy Ltd | Health & social care | 2025 |
| Trade Group Dundee Ltd | Construction | 2025 |
| Trade Monk Ltd | Wholesale & retail | 2022 |
| Trade Windows (Scotland) Ltd. | Wholesale & retail | 2003 |
| Tradefront Impex L.P. | | 2012 |
| Tradeinfo Contracts L.P. | | 2012 |
| Tradeline Sales L.P. | | 2014 |
| Tradelux LP | | 2016 |
| Trademan Associates L.P. | | 2015 |
| Tradercom Experts L.P. | | 2014 |
| Traderock Projects L.P. | | 2016 |
| Trades for ALL Limited | Construction | 2021 |
| TRADES24 Ltd | Construction | 2017 |
| Tradeship Contracts L.P. | | 2016 |
| Tradeview Invest L.P. | | 2015 |
| Tradeviz Ltd | Wholesale & retail | 2025 |
| Trailcom Express L.P. | | 2015 |
| Trailform Universal L.P. | | 2016 |
| Trailstone Consulting L.P. | | 2015 |
| Train Routine Ltd | Wholesale & retail | 2023 |
| Tramac Management Limited | Administrative & support | 2020 |
| Tramac Property Ltd | Real estate | 2024 |
| Trans Auto Link Limited | Wholesale & retail | 2025 |
| Transcend Digital Holdings Ltd | Other services | 2024 |
| Transcend Professional Ltd | Professional & scientific | 2024 |
| Transeurope Export L.P. | | 2015 |
| Transform Community Development | Health & social care | 1986 |
| Transition Dundee CIC | Wholesale & retail | 2021 |
| Traquair Properties & Groundworks Ltd | Hospitality | 2023 |
| Travel Cloud Ltd | Transport & logistics | 2019 |
| Traverse Roofing Ltd | Construction | 2023 |
| Traynorrov Limited | Mining & quarrying | 2018 |
| Treble D Holdings Limited | Financial services | 2023 |
| Treble N Ltd | Health & social care | 2014 |
| Trendlux Logistics L.P. | | 2015 |
| Trendy E-Shop Limited | Wholesale & retail | 2024 |
| Trexo Ltd | Wholesale & retail | 2025 |
| TRI Well-Being Ltd | Other services | 2023 |
| Triang Properties Ltd. | Real estate | 2013 |
| Triaz Trims Ltd | Other services | 2026 |
| Tricon Lettings Ltd | Real estate | 2024 |
| Tricres Group Ltd | Information & communication | 2019 |
| Triggle Investments Limited | Real estate | 2019 |
| Triggle Trading Ltd | Administrative & support | 2021 |
| Trimology Barbers Hilltown Ltd | Other services | 2025 |
| Trinity Arts Limited | Wholesale & retail | 2003 |
| Triorex Communications L.P. | | 2015 |
| Triple a Solutions Limited | Professional & scientific | 2025 |
| Triple J Films Ltd | Information & communication | 2022 |
| Triple M (Glasgow) Limited | Real estate | 2024 |
| Triple O Consultants Limited | Professional & scientific | 2022 |
| Tripple TEE Foods Ltd | Wholesale & retail | 2026 |
| Tripster (Scotland) Limited | Administrative & support | 2022 |
| Triptych | | 1980 |
| Triton Energy Scotland Ltd | Professional & scientific | 2006 |
| Triumphant Afriglobal Stores Ltd | Wholesale & retail | 2026 |
| Triumphant Anchor Ltd | Real estate | 2023 |
| Tronford Overseas L.P. | | 2015 |
| Tropical Transfers Ltd | Transport & logistics | 2025 |
| Troveuk Ltd | Wholesale & retail | 2024 |
| TRS Formwork Ltd | Construction | 2020 |
| True North Telecom Ltd | Information & communication | 2021 |
| Truelet Investments Limited | Financial services | 2025 |
| Truelet Property Management Limited | Real estate | 2025 |
| Truffino Holding LP | | 2017 |
| Trusst Joinery Limited | Extraterritorial | 2024 |
| Trusted Online Partners Ltd | Administrative & support | 2020 |
| Trutti Ltd | Wholesale & retail | 2025 |
| TS Welding Limited | Construction | 2014 |
| TSA Digital Ltd | Information & communication | 2021 |
| TSG Cleaning Services Limited | Administrative & support | 2019 |
| TSG Services Scotland Ltd | Administrative & support | 2018 |
| TSH Building Services Ltd | Construction | 2025 |