| Toll House Properties Ltd | Real estate | 2023 |
| Tower 2022 Ltd | Hospitality | 2022 |
| Tranent Convenience Store Ltd | Wholesale & retail | 2025 |
| Tranent FC Community Partnership Limited | Arts & recreation | 2026 |
| Tranent General Retail Ltd | Wholesale & retail | 2026 |
| Tranent Medical Practice LLP | | 2025 |
| Tranent Mini Market Ltd | Wholesale & retail | 2019 |
| Tranent Nails & Spa Ltd | Other services | 2024 |
| Tranent Stores Ltd | Wholesale & retail | 2026 |
| Tranent Villa Ltd | Hospitality | 2019 |
| Tranent Youth & Community Facility | Other services | 2005 |
| Transform Construction Group Ltd | Construction | 2025 |
| Transform Joinery Ltd | Construction | 2022 |
| Transform Restoration Ltd | Construction | 2021 |
| Tried 'N' Tested Ltd | Education | 2024 |
| TTW Motors Ltd | Wholesale & retail | 2019 |
| Tumsh Ltd. | Professional & scientific | 2015 |
| Turadh Impex LP | | 2018 |
| Tveurope Ltd | Information & communication | 2017 |
| Umber and Ochre Ltd | Construction | 2014 |
| Unit 3 Media Limited | Financial services | 2016 |
| Universal L.P. | | 2014 |
| USA Nails Tranent Ltd | Other services | 2025 |
| V & R Leisure Limited | Hospitality | 2019 |
| Valente Group Limited | Energy | 2019 |
| Van Clan Campers Ltd | Administrative & support | 2024 |
| Vankacori Property Limited | Real estate | 2024 |
| Vega Catering Limited | Hospitality | 2019 |
| Vernation Ltd | Other services | 2020 |
| Vjglobal Limited | Transport & logistics | 2023 |
| Volunteer Development East Lothian | Education | 2002 |
| Vystora Ltd | Wholesale & retail | 2025 |
| W.N. Lindsay Limited | Extraterritorial | 2020 |
| Wandering Bean Ltd | Hospitality | 2025 |
| WD Automotive Ltd | Wholesale & retail | 2024 |
| WE Move YOU Ltd | Transport & logistics | 2024 |
| Whispers 1985 Scotland Limited | Hospitality | 2025 |
| Whispers Lounge Bar Scotland Ltd | Hospitality | 2025 |
| White Stag Project Management Ltd | Construction | 2022 |
| Wilco Capital Group Ltd | Construction | 2026 |
| Williamson Bros Shellfish Ltd | Agriculture & fishing | 2018 |
| Willow Grace Therapy CIC | Health & social care | 2025 |
| Wilson & Wilson Developments Ltd | Construction | 2017 |
| Winton Brewery Limited | Manufacturing | 2016 |
| ZA Edin Ltd | Wholesale & retail | 2022 |
| Zest Building Services Limited | Construction | 2013 |
| Znpb Limited | Wholesale & retail | 2026 |