| Wura H&C Ltd | Administrative & support | 2025 |
| Wwma Ltd | Construction | 2025 |
| Wyvis Consulting Limited | Other services | 2016 |
| X-Cel Wellsolutions Ltd | Administrative & support | 2014 |
| X-Ecosse Limited | Information & communication | 1992 |
| X-Finity Sales LP | | 2017 |
| X-Spand Ltd | Real estate | 2018 |
| X10 Consulting Limited | Administrative & support | 2004 |
| X12 Group Limited | Wholesale & retail | 2025 |
| Xaidi's Cart Limited | Wholesale & retail | 2025 |
| XBS Tayside Ltd | Construction | 2024 |
| Xergy Group Limited | Mining & quarrying | 2018 |
| Xiaodan Limited | Hospitality | 2020 |
| XLR8 Advisory Ltd | Professional & scientific | 2023 |
| XR Construction L.P. | | 2016 |
| XU Foods Dundee Ltd | Hospitality | 2024 |
| XVN Limited | Construction | 2026 |
| XY Squared Ltd | Information & communication | 2018 |
| XYZ Digital Solutions Ltd | Other services | 2020 |
| Y D Limited | Real estate | 2001 |
| Y&C Rendering Limited | Construction | 2021 |
| Y&E Capital L.P. | | 2016 |
| YA & SA Group Ltd | Real estate | 2025 |
| Yaard Design Ltd | Professional & scientific | 2023 |
| Yacomini Automotive Ltd | Wholesale & retail | 2025 |
| Yada Yada Prizes Ltd | Wholesale & retail | 2023 |
| Yamm Restaurant Limited | Hospitality | 2025 |
| Yamuna Tech Limited | Wholesale & retail | 2024 |
| Yanaya Ltd | Information & communication | 2022 |
| Yardbridge Sales L.P. | | 2013 |
| Yardholm Import L.P. | | 2014 |
| Yardmark Commercial L.P. | | 2015 |
| Yardstick Enterprises Ltd | Hospitality | 2016 |
| Yardstone Partners L.P. | | 2015 |
| Yatter Ltd | Administrative & support | 2017 |
| YB Dundee Ltd | Hospitality | 2019 |
| Yczhu Ltd | Real estate | 2023 |
| YD Technology Ltd | Information & communication | 2026 |
| Ydventures Ltd | Agriculture & fishing | 2024 |
| Yellow DOT Interiors Ltd | Construction | 2026 |
| Yeshua's Heritage Child Care Limited | Health & social care | 2025 |
| Ymindset Ltd | Education | 2018 |
| Ynotdeco Interiors Ltd | Construction | 2024 |
| Yoga Meats Limited | Other services | 2026 |
| Young Enterprise - Scotland | Education | 1991 |
| Young Metal Services Limited | Manufacturing | 2025 |
| Young's Pipe Fitting Ltd | Mining & quarrying | 2022 |
| Your BED Centre Ltd | Wholesale & retail | 2019 |
| Your Dream Hair Ltd | Other services | 2019 |
| Your Home Buyer Scotland Ltd | Real estate | 2025 |
| Your Patient Partner Limited | Health & social care | 2024 |
| Your True Path to Wellness C.I.C. | Other services | 2022 |
| YU Finance Limited | Financial services | 2018 |
| Yummy HUT Dundee Ltd | Hospitality | 2025 |
| Yvonne's Fancy Dress Limited | Wholesale & retail | 2014 |
| Yvonne's Promotions Ltd | Wholesale & retail | 2025 |
| Yyyzzz Ltd | Hospitality | 2021 |
| Z & H Travel Ltd | Transport & logistics | 2024 |
| Z R Holdings Limited | Arts & recreation | 2019 |
| Zaika Bites Limited | Hospitality | 2025 |
| Zain & Zaara Investments Ltd | Wholesale & retail | 2017 |
| Zain Properties (Scotland) Limited | Real estate | 2010 |
| Zama Brand Limited | Wholesale & retail | 2025 |
| Zars Limited | Real estate | 2002 |
| Zaveriproperties Ltd | Households | 2021 |
| Zavi Property Limited | Households | 2024 |
| Zawita Store Ltd | Hospitality | 2024 |
| Zawwan Limited | Wholesale & retail | 2025 |
| ZB Store Limited | Wholesale & retail | 2017 |
| Zeehan Limited | Real estate | 2025 |
| Zeekoz Ltd | Hospitality | 2023 |
| Zeeway Ltd | Real estate | 2026 |
| Zelin LIU Photography Ltd | Manufacturing | 2022 |
| Zemgus Trading LP | | 2017 |
| ZEN Elements Ltd | Information & communication | 2008 |
| Zender Integrated Services Limited | Construction | 2026 |
| Zenith Commercial Properties Ltd | Real estate | 2025 |
| Zenith International Solutions Limited | Mining & quarrying | 2014 |
| Zephyr Project Management Limited | Professional & scientific | 2010 |
| Zeplin Ltd | Construction | 2017 |
| ZERO9ZERO Taxis Limited | Transport & logistics | 2020 |
| Zetta Elite U.K. Limited | Health & social care | 2021 |
| Zeus RWA Limited | Professional & scientific | 2025 |
| Zigzag Communications Ltd | Information & communication | 2012 |
| Zippy's Bar Ltd | Hospitality | 2025 |
| Zippydelivers Ltd | Transport & logistics | 2025 |
| ZLH Cleaning Services Ltd | Administrative & support | 2017 |
| Zoes Cleaning Services Ltd | Administrative & support | 2024 |
| Zoes Laundry Services Ltd | Administrative & support | 2024 |
| Zoestar Limited | Professional & scientific | 2026 |
| Zone One Coffee Ltd | Hospitality | 2025 |
| ZONE1 Health Ltd | Education | 2019 |
| ZOO Centre Group Ltd | Agriculture & fishing | 2019 |
| Zoocentre Ltd | Agriculture & fishing | 2009 |
| Zoomers Ltd | Wholesale & retail | 2020 |
| Zoor Hotels Ltd | Hospitality | 2025 |
| ZRM Investments Limited | Financial services | 2020 |
| ZS News Ltd | Wholesale & retail | 2023 |
| ZSG Investments Limited | Real estate | 2009 |
| ZSI Property Ltd | Financial services | 2025 |