| Strathurie Limited | Wholesale & retail | 2018 |
| Stratom Capital Limited | Information & communication | 2026 |
| Style Fusion Ltd | Wholesale & retail | 2025 |
| Sullivan Collins Ltd. | Administrative & support | 2010 |
| Summerlee House Limited | Health & social care | 2002 |
| Sundry Solutions Ltd | Wholesale & retail | 2025 |
| Super Duper Cleaning Ltd | Administrative & support | 2026 |
| SUR Medispa Ltd | Health & social care | 2016 |
| Surenow Property Limited | Real estate | 2006 |
| Suresurf Limited | Extraterritorial | 1998 |
| Sustainable Development Group Ltd | Professional & scientific | 2020 |
| SVS IT Solutions Limited | Wholesale & retail | 2015 |
| SW Connect Ltd | Health & social care | 2014 |
| SXU Property Ltd | Households | 2025 |
| Synthetic Pitchcare Limited | Professional & scientific | 2024 |
| T&G Productions Glasgow Ltd | Arts & recreation | 2015 |
| T4N Technologies Ltd | Information & communication | 2026 |
| TAG Corporation Ltd | Real estate | 2019 |
| Taggart Coating Consultants Ltd | Professional & scientific | 2025 |
| Tara Precision Engineering Ltd. | Professional & scientific | 2000 |
| Taylormade Grooming Services Ltd | Other services | 2019 |
| Techhh Ltd | Wholesale & retail | 2021 |
| Templeton Investments Limited | Real estate | 2024 |
| Temprite (Europe) Limited | Wholesale & retail | 1997 |
| Terapro Company Limited | Professional & scientific | 2020 |
| Terumo Aortic Limited | Extraterritorial | 2018 |
| Texas Gold Mining Corp Limited | Mining & quarrying | 2014 |
| TGA Engineering Limited | Professional & scientific | 2020 |
| TGC 2 Limited | Hospitality | 2015 |
| TGC 5 Limited | Hospitality | 2018 |
| TGC FAT Sams Live Limited | Hospitality | 2019 |
| TGC Leisure (Glasgow) Limited | Professional & scientific | 2013 |
| TGC Leisure Limited | Hospitality | 2015 |
| TGE Electrical Ltd | Construction | 2023 |
| Thal Couriers Ltd | Transport & logistics | 2025 |
| THE Alleviate Training Academy Limited | Education | 2025 |
| THE Braehead Tavern (Inchinnan) Limited | Professional & scientific | 1985 |
| THE Coach Alliance Ltd | Education | 2023 |
| THE Corner Shop Renfrew Limited | Wholesale & retail | 2012 |
| THE Deals Hub Limited | Professional & scientific | 2021 |
| THE ESG Advisory Service Limited | Professional & scientific | 2023 |
| THE Glasgow Watch Company Ltd | Wholesale & retail | 2020 |
| THE Golden Flame Ltd | Information & communication | 2025 |
| THE Jamal Investment Group Ltd | Real estate | 2021 |
| THE John Martin Partnership (Quantity Surveyors) Limited | Professional & scientific | 2005 |
| THE KEG Shack Limited | Wholesale & retail | 2021 |
| THE Knot DR. Limited | Wholesale & retail | 2017 |
| THE Lavelle Group Limited | Other services | 2024 |
| THE Liems Ltd | Wholesale & retail | 2025 |
| THE Lunch LAB Scotland Ltd | Hospitality | 2025 |
| THE Main Event Glasgow Limited | Hospitality | 2025 |
| THE Malcolm Campbell Group Limited | Administrative & support | 2017 |
| THE Mechanics (Glasgow) Ltd | Wholesale & retail | 2023 |
| THE Profili Partnership LLP | | 2009 |
| THE Renfrew Barber Ltd | Other services | 2020 |
| THE Spray DR Ltd | Construction | 2026 |
| THE Traffic Motor Company Limited | Wholesale & retail | 2022 |
| THE Western Public House Ltd | Hospitality | 2024 |
| Therma-Chem International Limited | Manufacturing | 2016 |
| Therma-Chem Limited | Professional & scientific | 1993 |
| Thistle & Hive Ltd | Agriculture & fishing | 2025 |
| Thistle Power Ltd | Construction | 2013 |
| Thompson P.E.G.S. Limited | Wholesale & retail | 1973 |
| Thomson Alarm & Communication Systems Limited | Construction | 1993 |
| Threesixty Architecture and Interior Design Limited | Professional & scientific | 2012 |
| Threesixty Architecture Holdings 2 Limited | Financial services | 2021 |
| Threesixty Architecture Holdings 3 Limited | Financial services | 2026 |
| Threesixty Architecture Holdings Limited | Professional & scientific | 2019 |
| Threesixty Architecture Limited | Professional & scientific | 2008 |
| Time for the Truth Publications Limited | Information & communication | 2000 |
| Titanium Shelf 109 Limited | Professional & scientific | 2016 |
| Titanium Shelf 113 Limited | Professional & scientific | 2016 |
| Titanium Trustees Limited | Professional & scientific | 2013 |
| TJH1868 Limited | Financial services | 2021 |
| TMG MOT Ltd | Wholesale & retail | 2025 |
| TMR Consultants Limited | Professional & scientific | 2006 |
| Toni's Cafe Ltd | Hospitality | 2025 |
| Top Mobile Ltd | Administrative & support | 2017 |
| Tots United Limited | Arts & recreation | 2022 |
| Tracy ANN Wishart PT Limited | Arts & recreation | 2021 |
| Trakke Ltd | Manufacturing | 2014 |
| Transmission Engineering Limited | Wholesale & retail | 2006 |
| Travieso Perro Ltd | Other services | 2025 |
| Treeman Rockafella Limited | Professional & scientific | 2019 |
| Truevalue Traders Ltd | Wholesale & retail | 2025 |
| Ttag Brickwork Limited | Professional & scientific | 2010 |
| Ttag Group Limited | Professional & scientific | 2010 |
| Ttag Holdings Limited | Financial services | 2024 |
| Ttag Limited | Wholesale & retail | 2001 |
| Turnils (UK) Limited | Professional & scientific | 1970 |
| Tyzo (Kilbarchan) Limited | Real estate | 1958 |
| Tyzo Limited | Households | 2020 |
| UA Detailing Ltd | Wholesale & retail | 2023 |
| UAN Motors Limited | Financial services | 2025 |
| Umar Renfrew Ltd | Hospitality | 2023 |
| Unbaggaged Ltd | Other services | 2019 |
| Underground Inspection Services Limited | Construction | 1998 |
| Uni-Heat Ltd. | Manufacturing | 2014 |
| Upper Clyde Shipbuilders Limited 86/27 | | 1967 |
| Urban Rack Ltd | Wholesale & retail | 2024 |