| Themis Consultants Limited | Other services | 2012 |
| Themis IM Limited | Information & communication | 2013 |
| Thepropertyleasingcompany Ltd | Hospitality | 2017 |
| Thermapak Limited | Manufacturing | 2018 |
| Thermaview Limited | Construction | 2026 |
| Thermopylae Group Ltd | Hospitality | 2024 |
| Theseasonedfinger (TSF) Ltd | Hospitality | 2025 |
| Thetechforce Ltd | Administrative & support | 2016 |
| Thetravelxperience Limited | Administrative & support | 2022 |
| Thilda African Food Limited | Wholesale & retail | 2025 |
| Think PR (Scotland) Limited | Professional & scientific | 2000 |
| Third Circle Coffee Ltd | Hospitality | 2023 |
| Third Level Foundation C.I.C. | Education | 2010 |
| Third Level Resources Ltd | Education | 2006 |
| Thiruvoth Ltd | Wholesale & retail | 2018 |
| This Homely Feeling Ltd | Real estate | 2019 |
| Thistle Apartments Ltd | Real estate | 2018 |
| Thistle Artificial Grass Limited | Administrative & support | 2015 |
| Thistle Bridal Limited | Wholesale & retail | 2026 |
| Thistle Dental Care Limited | Health & social care | 2017 |
| Thistle Escapes Limited | Real estate | 2025 |
| Thistle House Property Management Limited | Real estate | 2021 |
| Thistle Inspection Solutions Limited | Professional & scientific | 2016 |
| Thistle Investments (Northern) Limited | Real estate | 2005 |
| Thistle Investments Limited | Real estate | 2021 |
| Thistle Ironing and Laundry Limited | Administrative & support | 2023 |
| Thistle Jewellers Ltd | Manufacturing | 2019 |
| Thistle News Aberdeen Ltd | Wholesale & retail | 2017 |
| Thistle Occupational Health Limited | Health & social care | 2019 |
| Thistle Sports (Aberdeen) Limited | Wholesale & retail | 2003 |
| Thistle Street One Limited | Agriculture & fishing | 2009 |
| Thistle Tavern Cards Ltd | Wholesale & retail | 2023 |
| Thistle Tubulars Limited | Manufacturing | 2021 |
| Thistle Windows & Conservatories Limited | Construction | 1995 |
| Thistlestone Limited | Administrative & support | 2015 |
| Thom (Scotland) Limited | Transport & logistics | 2003 |
| Thomas Global Group Ltd | Wholesale & retail | 2026 |
| Thomond Property Ltd | Real estate | 2025 |
| Thompson Subsea Services Ltd | Mining & quarrying | 2016 |
| Thomson Design Services Limited | Professional & scientific | 2007 |
| Thomson Roofing Limited | Construction | 2014 |
| Thomson Treasury Holdings Limited | Information & communication | 2025 |
| Thorn Direct Ltd | Wholesale & retail | 2021 |
| Thorn Engineering (Aberdeen) Ltd | Manufacturing | 2012 |
| Thorn Kitchens Ltd | Wholesale & retail | 2020 |
| Thornhill Land LLP | | 2017 |
| Thoughts and Crosses Ltd | Wholesale & retail | 2021 |
| THREE60 Decom Services Limited | Administrative & support | 2025 |
| THREE60 Energy Consulting Limited | Mining & quarrying | 2024 |
| THREE60 Energy Renewables Limited | Energy | 1999 |
| THREE60 Energy Wells UK Holdings Limited | Mining & quarrying | 2015 |
| THREE60 Energy Wells UK Limited | Mining & quarrying | 1991 |
| THREE60 Epcc Limited | Professional & scientific | 2014 |
| THREE60 Integrity Management Limited | Mining & quarrying | 2021 |
| THREE60 Subsea Limited | Professional & scientific | 2011 |
| Thrive Together Aberdeen C.I.C. | Education | 2025 |
| Thrive Together Aberdeen Holdings Ltd | Health & social care | 2025 |
| Thrivehelp CIC | Information & communication | 2025 |
| Thurso on Board Community Interest Company | Construction | 2020 |
| Thurso Services Limited | Wholesale & retail | 2021 |
| Thyme Accommodation Ltd | Real estate | 2025 |
| Thyme Accountants Limited | Professional & scientific | 2014 |
| Thyme Tax & Accountancy Ltd | Professional & scientific | 2023 |
| TI Communications (Scotland) Ltd | Other services | 2021 |
| Tidy Green Clean Ltd | Administrative & support | 2017 |
| Tierney Strachan Consulting Limited | Manufacturing | 1997 |
| Tiger Lily Flowers Limited | Wholesale & retail | 2018 |
| Tigh Properties Limited | Real estate | 2022 |
| Tigsi Ltd | Real estate | 2021 |
| Tigson Project Solutions Limited | Professional & scientific | 2018 |
| TIL Aberdeen Limited | Real estate | 1998 |
| Tilestamp Limited | Real estate | 2000 |
| Tillybrake Limited | Real estate | 2005 |
| Tillyfourie Quarries Limited | Administrative & support | 1994 |
| Timberhawk Ltd | Construction | 2025 |
| Time Exposure Travel Ltd | Administrative & support | 2018 |
| Timekeepers Vault Limited | Manufacturing | 2024 |
| Timeless Clinic Aberdeen Ltd | Health & social care | 2025 |
| Timeless White Wedding Planning Limited | Other services | 2017 |
| Timelymeds Ltd | Wholesale & retail | 2025 |
| Timeport Projects L.P. | | 2014 |
| Timike Properties Ltd | Real estate | 2016 |
| Timmer Inter LP | | 2013 |
| Timorous Beastie Events Ltd | Hospitality | 2019 |
| Timrow Energy Limited | Energy | 2012 |
| Tindle & Macleod Associates Limited | Professional & scientific | 2012 |
| Tinox Ltd | Professional & scientific | 2015 |
| Tintnation Limited | Wholesale & retail | 2026 |
| Tinto Architecture Ltd. | Professional & scientific | 2004 |
| TIP TOE Club Ltd | Wholesale & retail | 2024 |
| TIP Top Building Services Ltd | Construction | 2019 |
| TIP Top Tracks Limited | Manufacturing | 2014 |
| TIP Top Tubs Ltd | Wholesale & retail | 2020 |
| Tipp Construction Limited | Construction | 2016 |
| Tirami Limited | Information & communication | 2015 |
| Tiresian Engineering Ltd | Wholesale & retail | 2008 |
| TIS Hydraulics Limited | Manufacturing | 1994 |
| TIS Manufacturing Limited | Manufacturing | 2001 |
| Titan Energies Limited | Administrative & support | 2008 |
| Titan Offshore UK Limited | Professional & scientific | 1989 |