| Rainwater Technologies Limited | Professional & scientific | 2017 |
| Red Tree Homes Ltd | Real estate | 2020 |
| Reilly Projects Ltd | Real estate | 2024 |
| Rhealise Your Potential Ltd | Education | 2025 |
| Ritchie Commerce Ltd | Professional & scientific | 2025 |
| Rosewell Services Ltd | Administrative & support | 2026 |
| Rottal Hydro Limited | Energy | 2007 |
| Rottal Sporting Club Limited | Arts & recreation | 2020 |
| Rrjj Holdings Limited | Financial services | 2025 |
| S & S Grewar Limited | Construction | 2004 |
| S D Crawford Electrical Ltd | Construction | 2018 |
| S. Channa Technical Oilfield Consulting Plus Ltd | Administrative & support | 2016 |
| Sage & BOW Property Ltd | Real estate | 2025 |
| Salon Muse Limited | Other services | 2024 |
| SAR Project Services Ltd | Professional & scientific | 2024 |
| Saucy Asian on the Go Ltd | Hospitality | 2026 |
| Scott James Partnership LP | | 2009 |
| Scottish Venison Limited | Professional & scientific | 2002 |
| SGY Plumbing and Heating Ltd | Construction | 2017 |
| Sheeni & Zaki Ltd | Wholesale & retail | 2016 |
| Sheep Health Scotland Ltd | Professional & scientific | 2018 |
| SIB Scottish Ice Blasting Ltd | Other services | 2025 |
| Slikk Clothing Ltd | Wholesale & retail | 2020 |
| Smudge Ropes Ltd | Construction | 2024 |
| Sona Health Collective Ltd | Health & social care | 2025 |
| Southmuir Services Ltd | Wholesale & retail | 1965 |
| Stapvelde Ltd. | Agriculture & fishing | 2024 |
| Stewart Craig Ltd | Transport & logistics | 2025 |
| Stewart Management Solutions Limited | Construction | 2025 |
| Stewart Pinned Products Ltd. | Manufacturing | 1928 |
| Strathmore Developments Limited | Construction | 2005 |
| Strathmore Potato Growers Limited | Agriculture & fishing | 2008 |
| Supercolour Ltd | Construction | 2017 |
| T Aitchison & SON Ltd | Administrative & support | 2013 |
| THE Esks Rivers & Fisheries Trust | Professional & scientific | 2007 |
| THE Kirribbean Limited | Other services | 2022 |
| THE Kirrie Inn Ltd | Hospitality | 2025 |
| THE Southmuir Company Limited | Financial services | 1998 |
| THE Studio Kirriemuir Ltd | Arts & recreation | 2020 |
| Thistle News & Gifts Limited | Wholesale & retail | 2008 |
| Three Bellies Brae Ltd | Hospitality | 2020 |
| Thrums Developments Limited | Real estate | 2012 |
| Thrums Engineering Services Limited | Professional & scientific | 2006 |
| Thrums Futures Limited | Professional & scientific | 2024 |
| Thrums Haulage Limited | Transport & logistics | 1993 |
| Thrums Produce LLP | | 2013 |
| TIW Properties Limited | Real estate | 2021 |
| TRI Angus Limited | Arts & recreation | 2014 |
| TVG (Angus) Limited | Professional & scientific | 2013 |
| Two Birds Fitness Limited | Arts & recreation | 2018 |
| U FLY Ltd | Arts & recreation | 2018 |
| UAN Wool (Scotland) Limited | Administrative & support | 2013 |
| Wallace Inspection Services Ltd. | Construction | 2003 |
| Webie Ltd. | Information & communication | 2004 |
| Websters Contracting Services Ltd | Construction | 2023 |
| WEE G Travel Limited | Transport & logistics | 2018 |
| Westmuir Community Development Trust | Other services | 2004 |
| Wilkie Nexus Holdings Limited | Financial services | 2024 |
| Wilkie Technical Textiles (Holding Company) Limited | Manufacturing | 2017 |
| William Edgar & SON | | 1985 |
| William Lindsay Junior | | 1978 |
| WM. R. Stewart & Sons (Hacklemakers) Limited | Manufacturing | 1946 |
| Woodworks Bespoke Carpentry Limited | Manufacturing | 2023 |
| Wynx Ltd | Professional & scientific | 2013 |
| Wynx Properties Limited | Real estate | 2020 |