| Strathearn House (Auchterarder) Ltd | Construction | 2011 |
| Strathleven Distillers Company Limited | Manufacturing | 2006 |
| Strathmore Solutions Limited | Administrative & support | 2011 |
| Strathtek C.N.C. Services Limited | Manufacturing | 1995 |
| Stratonauts Ltd | Education | 2019 |
| Stream Marine Careers Limited | Other services | 2019 |
| Stream Marine Technical Training Limited | Other services | 2019 |
| Stream Marine Training Group Limited | Other services | 2012 |
| Stream Marine Training Ltd | Other services | 2019 |
| Streamline Flooring Limited | Construction | 2019 |
| Streamlined Air Systems Ltd | Wholesale & retail | 2016 |
| Street Direct Limited | Manufacturing | 2024 |
| Street Power Ltd | Energy | 2013 |
| Street Solar Ltd | Extraterritorial | 2021 |
| Streetwise Energy Assessments Ltd | Professional & scientific | 2024 |
| Streetwise Solutions (Energy) Ltd | Professional & scientific | 2019 |
| Strength & Fitness Paisley Ltd | Arts & recreation | 2025 |
| Strike Competitions Ltd | Arts & recreation | 2026 |
| Strokesaver International Limited | Professional & scientific | 1977 |
| Strokesport Limited | Information & communication | 1977 |
| Stron Renewables Ltd | Construction | 2025 |
| Stronghold Joinery and Roofline Ltd | Construction | 2025 |
| Struxcore Limited | Professional & scientific | 2025 |
| Stuart Kerr Golf Limited | Arts & recreation | 2024 |
| Stuart Russell Photography Ltd | Professional & scientific | 2022 |
| Studio Kalm Paisley Limited | Arts & recreation | 2026 |
| Studio One Kitchens Limited | Wholesale & retail | 2011 |
| Studio TED Architecture Ltd | Professional & scientific | 2023 |
| Stumac Limited | Real estate | 2018 |
| Stygian Productions Ltd | Arts & recreation | 2026 |
| Stylish Garden Ltd | Construction | 2020 |
| SUB 10 Personal Training Ltd | Arts & recreation | 2025 |
| Sugarsnap Caterers Ltd | Hospitality | 2014 |
| Sultan Kebab Express Ltd | Hospitality | 2026 |
| Sun and Sage Limited | Wholesale & retail | 2025 |
| Sundowning Film Ltd | Information & communication | 2025 |
| Sunlight Outdoor Living Limited | Construction | 2022 |
| Supportkey Limited | Information & communication | 1998 |
| Supreme Assets Ltd | Real estate | 2014 |
| Supreme Being Limited | Wholesale & retail | 2023 |
| SUR International Talent Hub Limited | Administrative & support | 2021 |
| Surf Suicide Ltd | Information & communication | 2008 |
| Surfacing Solutions Scotland Limited | Professional & scientific | 2014 |
| Surgemar Ltd | Manufacturing | 2025 |
| Surgical Ltd | Health & social care | 2025 |
| Survey Group Holdings Ltd | Construction | 2018 |
| Susie BEE Ltd | Administrative & support | 2019 |
| Sustainable Logistics Ltd | Transport & logistics | 2020 |
| SW Medical Aesthetics & Wellness Ltd | Other services | 2025 |
| SW Print Studio Ltd | Manufacturing | 2013 |
| Swarm Holdings Ltd | Wholesale & retail | 2026 |
| SWB HV Services Limited | Professional & scientific | 2021 |
| Swbtrading Ltd | Hospitality | 2021 |
| SWCHEF10 Ltd | Hospitality | 2025 |
| Swellservices Ltd | Manufacturing | 2024 |
| SWH GAS & Plumbing Ltd | Construction | 2024 |
| Swiftsell Tech Ltd | Information & communication | 2025 |
| Switchease Limited | Wholesale & retail | 2019 |
| Sylenze Ltd | Information & communication | 2025 |
| Symmetria Renovations Ltd | Construction | 2022 |
| Synergy Civil Engineering Limited | Construction | 2005 |
| Synergy Holdings (Scotland) Limited | Construction | 2021 |
| SYNERGY24 Limited | Real estate | 2014 |
| Systems Communications and Networks (Scotland) Limited | Information & communication | 2001 |
| T & a Scotland Ltd | Hospitality | 2023 |
| T & M Young Taxis Ltd. | Transport & logistics | 2004 |
| T & N Contracts Limited | Construction | 2017 |
| T & T Motors Limited | Wholesale & retail | 2025 |
| T and C Leckie Flooring Ltd | Construction | 2026 |
| T E (Holdings) Limited | Financial services | 2010 |
| T&M Bustan Ltd | Other services | 2019 |
| T&W Care Services Ltd | Health & social care | 2025 |
| T.F.G. Imports (Treasures From Greece) Limited | Wholesale & retail | 2021 |
| T.R. Bonnyman, SON & Company Limited | Manufacturing | 1985 |
| T.S.M Managing Ltd | Transport & logistics | 2024 |
| T.S.R. Roadsweeper Hire Ltd | Administrative & support | 2019 |
| T66 Project Services Ltd | Professional & scientific | 2025 |
| Taap Tour Merchandise Limited | Other services | 2018 |
| TAB 7 Limited | Other services | 2024 |
| Tabyar Ltd | Professional & scientific | 2024 |
| Tagaloo Assets Limited | Professional & scientific | 2013 |
| Tails of Tranquility Limited | Other services | 2025 |
| Tajsk Ltd | Hospitality | 2024 |
| Takya Barber Ltd | Other services | 2025 |
| Talha Saleem Ltd | Manufacturing | 2026 |
| Taloslift Limited | Professional & scientific | 2021 |
| TAM Foods Ltd | Hospitality | 2021 |
| TAN Leisure Limited | Other services | 2020 |
| TAN Paisley Ltd | Other services | 2021 |
| Tandoori Palace Linwood Ltd | Hospitality | 2025 |
| Tanglewood Properties (Scotland) Ltd | Households | 2024 |
| Tartan Bars Limited | Hospitality | 2017 |
| Tartan Toad Ltd | Wholesale & retail | 2024 |
| Tartan Tweeds Ltd | Wholesale & retail | 2011 |
| Tartanstone Energy Ltd | Construction | 2025 |
| Task Experience Ltd | Construction | 2022 |
| Taste of Asia Paisley Ltd | Hospitality | 2019 |
| Taste of Mumbai Limited | Hospitality | 2024 |
| Taste of Spice Paisley Limited | Hospitality | 2026 |
| Tasty Piri Piri Ltd | Hospitality | 2021 |