| Shakes Ellon Ltd | Hospitality | 2023 |
| Shand Farms Limited | Agriculture & fishing | 1996 |
| Shorebase Limited | Information & communication | 2011 |
| Sight Science Limited | Health & social care | 2006 |
| Simon Heath Services Limited | Professional & scientific | 2003 |
| Simtec Simulation Solutions Ltd | Professional & scientific | 2017 |
| Skelmonae Windfarm Limited | Administrative & support | 2008 |
| Skene Crane Repairs Ltd. | Manufacturing | 2011 |
| SKI Contractors Ltd | Construction | 2021 |
| Skope Services Limited | Construction | 2025 |
| SL41 Design Ltd | Professional & scientific | 2023 |
| Smart Pipeline Solutions Ltd | Professional & scientific | 2025 |
| Smiddy Engineering Limited | Professional & scientific | 2011 |
| Smiddyhill Limited | Administrative & support | 2018 |
| SMW Safety Consulting Ltd | Construction | 2013 |
| Snobell Operations Ltd | Mining & quarrying | 2014 |
| Solmha Group Limited | Manufacturing | 2015 |
| Sophie Alexandria Photography Ltd | Professional & scientific | 2024 |
| SP Eco Maintenance Services Ltd | Construction | 2022 |
| Specialist Marine Technologies Limited | Manufacturing | 2015 |
| SPR Welding Ltd | Manufacturing | 2026 |
| Squadra Services LP | | 2021 |
| Staging Rooms Property Staging Ltd | Professional & scientific | 2024 |
| Staging Rooms Styled Lets Ltd | Professional & scientific | 2026 |
| Stamin Ltd. | Professional & scientific | 2006 |
| Standing Tree Productions Ltd | Information & communication | 2019 |
| Station Hotel (Ellon) Ltd. | Hospitality | 2002 |
| Steadylogistics Ltd | Transport & logistics | 2025 |
| Stephen Grant NDT Limited | Professional & scientific | 2013 |
| Steven Argo Limited | Agriculture & fishing | 2013 |
| Still Spirit Ltd | Wholesale & retail | 2016 |
| Stobbs Investments Limited | Financial services | 2022 |
| Storical Ltd | Information & communication | 2020 |
| Stratton Contracting Limited | Agriculture & fishing | 2007 |
| Studio Broon Limited | Professional & scientific | 2023 |
| Subsea Synthesis Limited | Professional & scientific | 2021 |
| Sulzer (Aberdeen) Limited | Manufacturing | 1993 |
| Sunnyside Forestry Limited | Agriculture & fishing | 2021 |
| Sustainable Development Enterprises Limited | Wholesale & retail | 2017 |
| Sycamore Properties (Scotland) Ltd. | Real estate | 1997 |
| Symphony Restaurants Ltd | Hospitality | 2019 |
| System Completions Ltd | Professional & scientific | 2026 |
| TA Subsea Ltd | Professional & scientific | 2019 |
| Tahuna Farms Ltd | Agriculture & fishing | 2020 |
| TANGO8 Ltd | Administrative & support | 2019 |
| Tarves Development Trust | Other services | 2016 |
| Taylor Subsea Services Ltd | Professional & scientific | 2024 |
| TE Lift Planning Ltd | Construction | 2024 |
| TEC Spray (Aberdeen) Ltd | Manufacturing | 2015 |
| Techdesign Engineering Ltd | Other services | 2016 |
| Technik Design Limited | Professional & scientific | 2005 |
| Technik Products Limited | Professional & scientific | 2019 |
| Teqnicraft Ltd | Professional & scientific | 2014 |
| THE Buchan Hotel Limited | Hospitality | 2007 |
| THE Chocolate Bar Ellon Ltd | Hospitality | 2019 |
| THE Club Hoose Ltd | Hospitality | 2023 |
| THE Coffee Apothecary Ltd | Wholesale & retail | 2013 |
| THE Coffee LAB (Ellon) Ltd | Hospitality | 2021 |
| THE MUD Pack Ltd | Wholesale & retail | 2026 |
| THE NAP Assistant Limited | Public administration | 2025 |
| THE Pet Stop (Grampian) Limited | Wholesale & retail | 2026 |
| THE Secure Storage Company (Scotland) Limited | Transport & logistics | 2017 |
| THE Shed Health Club Limited | Arts & recreation | 2019 |
| THE South African Biltong Compnay Ltd | Hospitality | 2019 |
| THE Woolhams Ltd | Real estate | 2024 |
| Thermo Tubs Ltd | Wholesale & retail | 2023 |
| Thinq Property Management Ltd | Hospitality | 2025 |
| Thistle Catering Services Ltd | Hospitality | 2023 |
| Tide Engineering Ltd | Professional & scientific | 2023 |
| Tiem Solutions Ltd | Professional & scientific | 2019 |
| Tillygreig Joinery Ltd | Manufacturing | 2023 |
| Timeley Intervention Limited | Professional & scientific | 2005 |
| Tolbooth Public House Limited | Hospitality | 2005 |
| Tolquhon Holdings Ltd | Financial services | 2026 |
| Tolypeutes Capital LP | | 2014 |
| Toolden Group Limited | Wholesale & retail | 2020 |
| Toolden Limited | Wholesale & retail | 2013 |
| Torlundie Property Holdings Ltd | Real estate | 2025 |
| Torrealba Limited | Information & communication | 2017 |
| Tracey Devine Smith Limited | Other services | 2011 |
| Treekind Ltd | Agriculture & fishing | 2018 |
| Tricia Sanitary Products Ltd | Manufacturing | 2018 |
| Trinity Hair Limited | Other services | 2000 |
| Trinity Wash Limited | Other services | 2020 |
| Tropical Gateway Health Limited | Health & social care | 2022 |
| TT Electrical Services (Scotland) Ltd | Construction | 2014 |
| Turas Spirits Ltd | Manufacturing | 2016 |
| Udny Green Kirk | Other services | 2024 |
| Ultra Processed Free Ltd | Hospitality | 2024 |
| Underwater Vehicle Services Ltd | Construction | 2011 |
| Unique Build (Scotland) Limited | Construction | 2006 |
| Unique Jewels Ltd | Manufacturing | 2013 |
| Urbn Skyline Limited | Professional & scientific | 2024 |
| Velohub (UK) Ltd | Professional & scientific | 2022 |
| Vertas Services Limited | Mining & quarrying | 2018 |
| Vuokko Ltd | Professional & scientific | 2025 |
| W & G Gray Limited | Construction | 2003 |
| Walkden Medical Ltd | Health & social care | 2018 |
| Wallace Plant Limited | Administrative & support | 2023 |
| WE DO DOO Ltd | Administrative & support | 2025 |