| Shire Services Ltd | Professional & scientific | 2025 |
| Sholtod Limited | Health & social care | 2022 |
| Shona Spence Ltd | Health & social care | 2024 |
| Simply Hireabox Ltd | Transport & logistics | 2014 |
| Simply Store-It Ltd | Transport & logistics | 2018 |
| Simply Tennis Ltd | Arts & recreation | 2021 |
| Simpson Game Limited | Agriculture & fishing | 2006 |
| Sinclair Technical Services Ltd | Construction | 2021 |
| Sinclair's Property Limited | Real estate | 2026 |
| SIR Motorsport Ltd | Information & communication | 2026 |
| SJ Thomson (Insch) Limited | Administrative & support | 2005 |
| SJF Contracting Ltd | Construction | 2025 |
| SJS Services (Aberdeen) Ltd | Mining & quarrying | 2015 |
| Sjsc Global Ltd | Other services | 2024 |
| SJW Engineering & Services Limited | Wholesale & retail | 2026 |
| Skicross Performance Ltd | Arts & recreation | 2023 |
| Skirrid Ltd. | Professional & scientific | 2022 |
| SL Beech Grove Consultancy Limited | Professional & scientific | 2026 |
| Slater Tech Services Ltd | Manufacturing | 2025 |
| Sleek Data Solutions Ltd | Information & communication | 2024 |
| Slip Creations Ltd | Arts & recreation | 2026 |
| SLL Engineering Consultancy Ltd | Professional & scientific | 2016 |
| Sllr Consulting Limited | Other services | 2011 |
| Sloans Country Sports Limited | Wholesale & retail | 2024 |
| Sloda Environmental Ltd | Water & waste | 2025 |
| Smart Intervention & Auditing Ltd | Administrative & support | 2026 |
| Smilee Futures Ltd | Financial services | 2022 |
| SMS Hydraulics Limited | Wholesale & retail | 2014 |
| Snaplar Ltd | Wholesale & retail | 2025 |
| SNM Aberdeen Ltd | Hospitality | 2021 |
| Soak Juices Ltd | Manufacturing | 2020 |
| Soilzone Limited | Construction | 1996 |
| Solasta Skin Ltd | Other services | 2020 |
| Solasta Swim Ltd | Wholesale & retail | 2026 |
| Solo Turkish Barber Ltd | Other services | 2023 |
| Solutionised Ltd | Information & communication | 2026 |
| Sonmar Solutions Ltd. | Mining & quarrying | 2008 |
| Sorcha Developments Ltd | Real estate | 2021 |
| Sound Technology Audio-Visual Limited | Wholesale & retail | 2003 |
| Space Youth Counselling Ltd | Health & social care | 2025 |
| Spectrum Integrated Safety Solutions Ltd | Professional & scientific | 2012 |
| Spey Fire Protection Ltd | Public administration | 2020 |
| Spirit of LE Mans Ltd | Wholesale & retail | 2022 |
| Spoil ME Hair Limited | Other services | 2012 |
| Spot on Safety Limited | Public administration | 2024 |
| Spotless Steam Ltd | Administrative & support | 2025 |
| Squee - G - DUZ - IT Limited | Administrative & support | 2022 |
| SRI Vighneshwara Limited | Wholesale & retail | 2025 |
| SRM Subsea Ltd | Professional & scientific | 2018 |
| SS Kintore Limited | Hospitality | 2019 |
| St&P Training Consultants Ltd | Education | 2011 |
| Stag Properties Scot Ltd | Construction | 2025 |
| Stargas Ltd | Construction | 2021 |
| Start Right Transport Ltd | Transport & logistics | 2020 |
| Station 83 Limited | Arts & recreation | 2018 |
| Station Garage (Kintore) Limited | Wholesale & retail | 2004 |
| Station Road Garage (Inverurie) Limited | Wholesale & retail | 2003 |
| Steam & Air Services Ltd | Energy | 2023 |
| Stephen D Ross Limited | Transport & logistics | 2020 |
| Steve Sleigh Ltd | Administrative & support | 2014 |
| Steven Subsea Services Limited | Administrative & support | 2020 |
| Stewardship Wealth Limited | Financial services | 2017 |
| Stewart Agricultural Limited | Manufacturing | 1996 |
| Stewart Plant Hire Limited | Administrative & support | 2011 |
| Still Shining Ltd | Manufacturing | 2016 |
| Strachan Electrical Solutions Limited | Construction | 2023 |
| Strathmore Financial Services Limited | Professional & scientific | 2009 |
| Strathorn Riding Club Ltd | Arts & recreation | 2019 |
| Stuart Murrison Plumbing and Heating Ltd | Construction | 2022 |
| Studio NO7 Limited | Professional & scientific | 2019 |
| Styin' Ltd | Information & communication | 2025 |
| Sub-Robotix Ltd | Professional & scientific | 2025 |
| Subsea Engenuity Limited | Professional & scientific | 2017 |
| Subsea Tooling Services UK Limited | Professional & scientific | 2013 |
| Subzee Engineering Ltd | Professional & scientific | 2024 |
| Suirflo Limited | Professional & scientific | 2011 |
| Sunlit Shadow Events Co Ltd | Arts & recreation | 2022 |
| Sunnyside Safety Services Ltd | Professional & scientific | 2022 |
| Sunset Seaview Limited | Professional & scientific | 2018 |
| Sustainable Roots Kintore Limited | Wholesale & retail | 2021 |
| Sutherland & Co (Old Craig) Ltd | Agriculture & fishing | 2011 |
| SWB Transport Ltd | Transport & logistics | 2026 |
| Sweeney Kincaid Limited | Wholesale & retail | 1999 |
| Swel Services Limited | Mining & quarrying | 2025 |
| Sweynsys Ltd | Professional & scientific | 2025 |
| Swingle Suit Ltd | Hospitality | 2018 |
| Synex Limited | Mining & quarrying | 2021 |
| T & H Scaffold Hire Ltd | Other services | 2026 |
| T Kaye Consulting Ltd | Professional & scientific | 2022 |
| T3DATA Ltd | Information & communication | 2025 |
| Task-Pro (Aberdeen) Limited | Mining & quarrying | 2009 |
| Tattie Tasty Ltd | Hospitality | 2026 |
| Taylor Made Refills Limited | Manufacturing | 2020 |
| Team Padfield Ltd | Agriculture & fishing | 2022 |
| Televise Ltd | Construction | 2019 |
| TEN Feet Tall Theatre Ltd | Arts & recreation | 2016 |
| Terrasol Limited | Information & communication | 2002 |
| Teuchan Wind Limited | Professional & scientific | 2012 |
| Tfmcc Services Limited | Other services | 2012 |
| THE Aberdeen Mortgage Brokers Ltd | Financial services | 2019 |