| Titan Steel Limited | Manufacturing | 2010 |
| Titan Tools Group Limited | Professional & scientific | 2019 |
| Titan Tools Services Limited | Financial services | 2009 |
| Titanedge Systems LLP | | 2025 |
| Titi Lungu Ltd | Construction | 2019 |
| Tivoli Arsenal LP | | 2014 |
| TJ Property Consultants Ltd | Real estate | 2014 |
| TJB Karios Engineering Consultancy Limited | Professional & scientific | 2019 |
| TJS Ace 4HEALTH Limited | Health & social care | 2017 |
| TKD Direct Ltd | Wholesale & retail | 2019 |
| Tkgoldhaven Ltd | Wholesale & retail | 2026 |
| TKL Physiotherapy Ltd | Health & social care | 2026 |
| TKM Ventilation Services (Aberdeen) Limited | Professional & scientific | 2018 |
| Tktx UK Ltd | Wholesale & retail | 2024 |
| TLC Property Group Ltd | Real estate | 2025 |
| TLC Transportation & Logistic Consulting (UK) Ltd | Administrative & support | 2009 |
| TM Consulting (UK) Limited | Professional & scientific | 2010 |
| TM Professional Solutions Limited | Professional & scientific | 2016 |
| TML Consulting International Ltd | Professional & scientific | 2026 |
| TMM Law Limited | Professional & scientific | 2014 |
| TMM Trustees Limited | Other services | 2025 |
| TMO Logistix Ltd | Transport & logistics | 2024 |
| TMR Skye Limited | Hospitality | 2025 |
| TMS Oldco Limited | Education | 2014 |
| TNH Property Ltd | Real estate | 2026 |
| TNR Ltd | Hospitality | 2017 |
| Toal Subsea Limited | Professional & scientific | 2007 |
| Toba Enterprises Ltd | Wholesale & retail | 2022 |
| Toda Taxis Limited | Transport & logistics | 2000 |
| Today I'M Limited | Information & communication | 2013 |
| Toddrill Services Limited | Administrative & support | 2003 |
| Toderash Painting Ltd | Construction | 2024 |
| Toft Properties Limited | Real estate | 1996 |
| Tokaido Industries LP | | 2015 |
| Tokugawa NET LP | | 2014 |
| Toltek Inter LP | | 2013 |
| TOM Calus Ltd | Wholesale & retail | 2022 |
| Tomatoes and Greens Ltd | Wholesale & retail | 2018 |
| Tomax Drilling Technology UK Limited | Mining & quarrying | 2014 |
| Tomia Homes Limited | Real estate | 2025 |
| Tomlou Design Ltd. | Professional & scientific | 2011 |
| Tommy Dargie Services Limited | Administrative & support | 2016 |
| Tomtechs Services Limited | Mining & quarrying | 2019 |
| TOO Busy to Pause Ltd | Professional & scientific | 2026 |
| Toolboyz Raffle Ltd | Arts & recreation | 2025 |
| Toolhut Ltd | Other services | 2025 |
| Tooling Alpha Limited | Manufacturing | 2014 |
| Toor Engineering Limited | Other services | 2010 |
| Toorprops Limited | Real estate | 2024 |
| Toos Ltd | Real estate | 2012 |
| Top Butchers Aberdeen Ltd | Wholesale & retail | 2025 |
| Top Drone Ltd | Construction | 2026 |
| Top Group Ltd | Construction | 2015 |
| Top Scot Promotions Limited | Administrative & support | 1998 |
| Top-Sub Inspection Limited | Administrative & support | 2012 |
| Topgranite Limited | Hospitality | 2007 |
| Topomarine Ltd | Professional & scientific | 2024 |
| Topsail Fish Products Ltd | Manufacturing | 2026 |
| Toptrove Europe Limited | Information & communication | 2025 |
| Torquer Limited | Administrative & support | 2013 |
| Torren Ltd | Information & communication | 2025 |
| Torris Healthcare Services Ltd | Other services | 2020 |
| Torry Development Trust Limited | Other services | 2014 |
| Torry Fish Bar Limited | Administrative & support | 2003 |
| Torry Foods Ltd | Hospitality | 2026 |
| Torry Main Bar Ltd | Hospitality | 2016 |
| Torry Retail Limited | Wholesale & retail | 2021 |
| Tortuga Inter LP | | 2013 |
| Torus Integrated Services Limited | Administrative & support | 2022 |
| Tost Aberdeen Ltd | Hospitality | 2025 |
| Tostom Creations Ltd | Wholesale & retail | 2026 |
| Total Delivery Solutions Ltd | Transport & logistics | 2023 |
| Total Endurance Coaching Ltd | Arts & recreation | 2016 |
| Total Endurance Cycles Ltd | Wholesale & retail | 2024 |
| Total Endurance Ltd | Arts & recreation | 2006 |
| Total Endurance Performance Ltd | Education | 2026 |
| Total Healthcare Technologies Ltd | Information & communication | 2026 |
| Total Perspectives Limited | Professional & scientific | 2015 |
| Total Waste Management Alliance Limited | Water & waste | 2000 |
| Total Waste Management International Ltd. | Administrative & support | 2000 |
| Totaltime Energy & Engineering Limited | Professional & scientific | 2011 |
| Touch Blue Group Ltd | Manufacturing | 2022 |
| Touch of Love Arts & Culture CIC | Education | 2025 |
| Touch of Spice Aberdeen Ltd | Hospitality | 2020 |
| Touz UGC Ltd | Other services | 2026 |
| Tower Market LP | | 2013 |
| Towie Barclay Castle Limited | Hospitality | 2023 |
| Townhead (Mcdowall) Limited | Agriculture & fishing | 1992 |
| Townrock Energy Limited | Professional & scientific | 2013 |
| Towquip Ltd | Manufacturing | 2018 |
| TP Engineering & Construction Ltd | Construction | 2019 |
| TP Security Limited | Administrative & support | 2024 |
| Tpac Properties Ltd | Real estate | 2024 |
| Tplc Commercial Ltd | Real estate | 2024 |
| Tplc Renovations Ltd | Construction | 2024 |
| TPM Consulting Limited | Other services | 2025 |
| TPS Ecosse Limited | Wholesale & retail | 2022 |
| Trabaz Delivery Ltd | Transport & logistics | 2023 |
| Trac Energy Limited | Administrative & support | 2009 |
| Trac Engineering Limited | Wholesale & retail | 2009 |