| Rybay Estates Ltd | Real estate | 2019 |
| S B Bodytech Ltd | Wholesale & retail | 2018 |
| S Mckay Services Ltd | Professional & scientific | 2025 |
| Sade Blake Ltd | Manufacturing | 2024 |
| Safety Right Ltd | Mining & quarrying | 2012 |
| Saffron Property Developments Limited | Real estate | 2014 |
| Sallorch Data Services Ltd | Professional & scientific | 2024 |
| Sallork (Property) Limited | Professional & scientific | 2009 |
| Sallork Legal and Compliance Limited | Professional & scientific | 2013 |
| Salt Loch Ltd | Hospitality | 2021 |
| Saltire Building Services Ltd | Manufacturing | 2026 |
| Saltire Chimney Sweeps Ltd | Administrative & support | 2022 |
| Saltire Cookers Ltd | Professional & scientific | 2020 |
| Sammy Cunningham Ltd | Professional & scientific | 2024 |
| SB Stoney Ltd | Wholesale & retail | 2023 |
| SB Well Services Ltd | Mining & quarrying | 2014 |
| SBS Intl Ltd | Professional & scientific | 2004 |
| SC Well Services Ltd | Mining & quarrying | 2023 |
| Scallywags Soft Play (Montrose) Limited | Hospitality | 2024 |
| Scaravello Ltd | Mining & quarrying | 2011 |
| Scot-Nor Services Ltd | Mining & quarrying | 2011 |
| Scotmart Retail Ltd | Wholesale & retail | 2014 |
| Scots Pine Environmental Limited | Professional & scientific | 2024 |
| Scott Kingsley Limited | Professional & scientific | 2012 |
| Scott Paton Engineering Limited | Professional & scientific | 2011 |
| Scott Silver Joinery Limited | Construction | 2013 |
| SDU Engineering Ltd | Professional & scientific | 2025 |
| Sea Convenience Limited | Wholesale & retail | 2025 |
| Seadyn Ltd | Professional & scientific | 2016 |
| Seafood Bothy Ltd | Wholesale & retail | 2022 |
| Seaweed Energy Ltd | Energy | 2022 |
| SEE IT OFF Productions Limited | Information & communication | 2021 |
| SG Tree Services Ltd | Professional & scientific | 2017 |
| Shak & Jamal Limited | Hospitality | 2024 |
| Shand Property Services Ltd | Professional & scientific | 2024 |
| Shanghai Company Limited | Hospitality | 2024 |
| Sharkys 2.0 Ltd | Hospitality | 2024 |
| Siam Thai Cuisine Ltd | Hospitality | 2023 |
| Simon Fabrication Ltd | Manufacturing | 2020 |
| Simon J Kelly Ltd | Manufacturing | 2018 |
| SKD Shore Limited | Mining & quarrying | 2003 |
| Skibo Innovation Ltd | Professional & scientific | 2017 |
| Skinnerautomotivesolutions Ltd | Wholesale & retail | 2026 |
| Skyline Video & Photography Ltd | Professional & scientific | 2011 |
| Slesser Property Ltd | Real estate | 2024 |
| Sling IT & RIG IT Ltd | Arts & recreation | 2018 |
| Slmj Well Services Ltd | Mining & quarrying | 2005 |
| Smart Shine Ltd | Administrative & support | 2017 |
| Smart Storage Solutions Limited | Other services | 2012 |
| Snooks Properties Limited | Real estate | 2024 |
| Snowdrop Developments (Aberdeen) Limited | Construction | 2014 |
| Snowdrop Developments (Albyn) Limited | Construction | 2021 |
| Snowdrop Developments (Commercial) Ltd | Real estate | 2021 |
| Snowdrop Developments (Scotland) Limited | Construction | 2025 |
| Snowdrop Developments (ST Andrews) Limited | Construction | 2026 |
| Snowdrop Developments (UK) Ltd | Construction | 2012 |
| Social Express Ltd | Professional & scientific | 2026 |
| Solar Swan Systems Limited | Professional & scientific | 2016 |
| SP Johnson Ltd | Professional & scientific | 2014 |
| Spartan Delivery Ltd | Transport & logistics | 2025 |
| Spartan Roofing & Building Ltd. | Construction | 2025 |
| SPC Subsea Ltd | Mining & quarrying | 2021 |
| Spensar Ltd | Wholesale & retail | 2025 |
| Speyside Whisky Consultants Limited | Professional & scientific | 2023 |
| Spot on Training Limited | Education | 2016 |
| SRG Wellservices Limited | Mining & quarrying | 2004 |
| SS Stonework Building Contractors Ltd | Construction | 2022 |
| ST Cyrus Joinery Ltd | Construction | 2022 |
| Star-Haven Marine Limited | Professional & scientific | 2018 |
| Stem at the Garvock Goodlife CIC | Education | 2025 |
| Stephen Copeland Limited | Manufacturing | 2020 |
| Steven Griffiths Coaching Limited | Other services | 2026 |
| Steven Reid Consultancy Ltd | Professional & scientific | 2025 |
| Stirling Ogilvie & Mcquistan, Farmers | | 1999 |
| Stirling Potatoes Limited | Agriculture & fishing | 1999 |
| STL Developments Ltd | Mining & quarrying | 2014 |
| Structural Mechanics Limited | Professional & scientific | 1988 |
| STS Limekilns Limited | Real estate | 2021 |
| Stuart's Cake Emporium Ltd | Manufacturing | 2024 |
| Subsea & Pipeline Pigging Services (Spps) Ltd | Administrative & support | 2009 |
| Subsoft Controls Limited | Mining & quarrying | 2008 |
| Sunnyside Estate Limited | Real estate | 2016 |
| SUP2SUMMIT Ltd | Arts & recreation | 2021 |
| Sutton Roofing & Cladding Ltd | Construction | 2003 |
| SW Reel-Tech Ltd | Manufacturing | 2020 |
| SWY Logistics Ltd | Professional & scientific | 2016 |
| Synergy Support Services (3S) Ltd | Professional & scientific | 2019 |
| Sèidra Safety Ltd | Construction | 2025 |
| T Mulholland Electrical Ltd | Construction | 2024 |
| Tactical Timelines Ltd | Professional & scientific | 2024 |
| Talos Services Limited | Professional & scientific | 2002 |
| Tangleha Artists Collective | Education | 2016 |
| Tastler Ltd | Hospitality | 2021 |
| Taylor's Auction Rooms (Montrose) Limited | Wholesale & retail | 1991 |
| Tayside Loler Inspection Ltd | Mining & quarrying | 2016 |
| Technical Solutions Scotland Ltd | Mining & quarrying | 2008 |
| Tennis Tayside | Arts & recreation | 2004 |
| THE Aberdeen and District Motor Club Ltd. | Arts & recreation | 1952 |
| THE Adam Centre | Health & social care | 2003 |
| THE Coffee House (Montrose) Ltd | Hospitality | 2022 |